Chapter 2 of 22
Chapter 2: A Snake Charmer's Story
Kalbeliyas, Indian Snakes, Venom, Fangs, Antivenom & Wildlife Laws | CBSE Session 2026–27
Core Pedagogical Competencies & Concepts
- The Kalbeliya community shares a cultural and traditional bond with snakes, passing down knowledge across generations.
- Musical instruments used by snake charmers: Been, Tumba, Khanjiri, and Dhol.
- Out of hundreds of snake species in India, only four varieties are dangerously poisonous: Cobra (नाग), Common Krait (करैत), Russell's Viper (दुबोइया), and Saw-scaled Viper (अफ़ई).
- Poisonous snakes have two hollow fangs through which venom enters the bloodstream when they bite.
- Snake venom medicine (antivenom) is manufactured directly from the venom of the snakes themselves and is stocked in government hospitals.
- Snakes are friends of farmers: they eat rats in fields and prevent crop destruction.
- The Wildlife Protection Act made it illegal to catch and keep wild animals, prompting snake charmers to adapt into musical performers and educators.
All Textbook Exercises & In-Text Tasks (22 Questions)
100% Complete Ingestion
Q1
Textbook Exercise
Why are snakes described as 'friends of farmers'? What would happen to crops if all snakes were removed from agricultural fields?
[3 Marks]
✅ Step-by-Step Solution & Working
Snakes are beneficial friends of farmers because they eat rats and mice in agricultural fields. Rats reproduce rapidly and destroy standing grains, roots, and stored food. If all snakes were killed or removed, the rodent population would explode uncontrollable, resulting in massive destruction of food crops and widespread agricultural losses.
CBSE Step-by-Step Marking Scheme
Identification of snakes as rodent predators
1.5 Marks
Consequence of snake removal on food crops and farmer livelihood
1.5 Marks
Q2
Textbook Exercise
How many types of poisonous snakes are found in India? Name each of them and state how snake venom enters a victim's body.
[4 Marks]
✅ Step-by-Step Solution & Working
Out of the numerous snake species found across India, only four varieties are venomous:
- Cobra (नाग)
- Common Krait (करैत)
- Russell's Viper (दुबोइया)
- Saw-scaled Viper (अफ़ई)
CBSE Step-by-Step Marking Scheme
Correct number (4) and names of all four venomous snakes
2 Marks
Explanation of fangs as hollow injection needles
2 Marks
Q3
Textbook Exercise
How is snake antivenom (the medicine for snake bites) prepared, and where can people find it during an emergency?
[3 Marks]
✅ Step-by-Step Solution & Working
Snake antivenom is made directly from snake venom itself. Small, controlled doses of snake venom are collected by extracting it from live snakes. It is then injected into animals like horses to produce antibodies, which are purified into antivenom serum. Snake bite antivenom is available at all government primary healthcare centres and district hospitals across the country.
CBSE Step-by-Step Marking Scheme
Explanation that antivenom is manufactured from snake venom
1.5 Marks
Availability in government hospitals & health centres
1.5 Marks
Q4
Textbook Exercise
What law did the government enact regarding wild animals, and what dilemma did it create for the Kalbeliya community?
[3 Marks]
✅ Step-by-Step Solution & Working
The Indian government enacted the Wildlife Protection Act, which makes it illegal to catch, keep, or sell wild animals, including snakes.
Dilemma for Kalbeliyas: Snake charming was the traditional profession and sole source of livelihood for Kalbeliya families. The ban suddenly took away their source of income. To adapt, many Kalbeliyas have preserved their cultural heritage by transitioning into folk dancers, musical performers, and wildlife education guides.
Dilemma for Kalbeliyas: Snake charming was the traditional profession and sole source of livelihood for Kalbeliya families. The ban suddenly took away their source of income. To adapt, many Kalbeliyas have preserved their cultural heritage by transitioning into folk dancers, musical performers, and wildlife education guides.
CBSE Step-by-Step Marking Scheme
Statement of the Wildlife Protection law prohibiting capture
1.5 Marks
Impact on Kalbeliya livelihood and cultural adaptation
1.5 Marks
Q5
Think and Discuss • Environmental Science & Ecology • A Snake Charmer's Story
[Textbook Activity & Question 1] In 'A Snake Charmer's Story', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q6
Find Out and Write • Observational Field Study • A Snake Charmer's Story
[Textbook Activity & Question 2] In 'A Snake Charmer's Story', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q7
Scientific Investigation • Ecosystem Relationships • A Snake Charmer's Story
[Textbook Activity & Question 3] In 'A Snake Charmer's Story', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q8
Traditional Wisdom & Community Stewardship • Conservation • A Snake Charmer's Story
[Textbook Activity & Question 4] In 'A Snake Charmer's Story', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q9
Survey & Data Collection • Experiential Inquiry • A Snake Charmer's Story
[Textbook Activity & Question 5] In 'A Snake Charmer's Story', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q10
Health, Diet & Human Biology • Nutritional Science • A Snake Charmer's Story
[Textbook Activity & Question 6] In 'A Snake Charmer's Story', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q11
Disaster Preparedness & Climate Resilience • Geography • A Snake Charmer's Story
[Textbook Activity & Question 7] In 'A Snake Charmer's Story', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q12
Biodiversity & Habitat Adaptations • Wildlife Protection • A Snake Charmer's Story
[Textbook Activity & Question 8] In 'A Snake Charmer's Story', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q13
Think and Discuss • Environmental Science & Ecology • A Snake Charmer's Story
[Textbook Activity & Question 9] In 'A Snake Charmer's Story', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q14
Find Out and Write • Observational Field Study • A Snake Charmer's Story
[Textbook Activity & Question 10] In 'A Snake Charmer's Story', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q15
Scientific Investigation • Ecosystem Relationships • A Snake Charmer's Story
[Textbook Activity & Question 11] In 'A Snake Charmer's Story', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q16
Traditional Wisdom & Community Stewardship • Conservation • A Snake Charmer's Story
[Textbook Activity & Question 12] In 'A Snake Charmer's Story', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q17
Survey & Data Collection • Experiential Inquiry • A Snake Charmer's Story
[Textbook Activity & Question 13] In 'A Snake Charmer's Story', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q18
Health, Diet & Human Biology • Nutritional Science • A Snake Charmer's Story
[Textbook Activity & Question 14] In 'A Snake Charmer's Story', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q19
Disaster Preparedness & Climate Resilience • Geography • A Snake Charmer's Story
[Textbook Activity & Question 15] In 'A Snake Charmer's Story', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q20
Biodiversity & Habitat Adaptations • Wildlife Protection • A Snake Charmer's Story
[Textbook Activity & Question 16] In 'A Snake Charmer's Story', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q21
Think and Discuss • Environmental Science & Ecology • A Snake Charmer's Story
[Textbook Activity & Question 17] In 'A Snake Charmer's Story', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
Q22
Find Out and Write • Observational Field Study • A Snake Charmer's Story
[Textbook Activity & Question 18] In 'A Snake Charmer's Story', describe how students can conduct an empirical investigation or discussion on this topic and explain the scientific principles involved.
[3 Marks]
✅ Step-by-Step Solution & Working
Scientific Model Answer & Environmental Analysis:
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
1. Field Inquiry / Observation: In A Snake Charmer's Story, students examine real-world ecological relationships, habitat dependencies, and sustainable environmental practices.
2. Scientific Core Principles: Applying primary scientific methods—such as formulating a hypothesis, measuring field parameters, and recording observations in a nature journal—reveals direct linkages between human communities and natural cycles.
3. Stewardship Conclusion: Understanding these concepts cultivates empathy for living organisms and empowers students to implement eco-friendly conservation measures in daily life.
CBSE Step-by-Step Marking Scheme
Observation methodology & identification of ecological concepts
1.0 M
Scientific explanation of natural cause-and-effect processes
1.0 M
Actionable conservation recommendations stated clearly
1.0 M
🌟 NEP 2020 Competency-Based Case Study
Emergency Response to Snake Bites
While working in a paddy field during the monsoon, a farmer was bitten on the ankle by a snake. Some villagers suggested cutting the wound with a blade and sucking out the blood, while a school teacher insisted on taking him directly to the district hospital.
Analytical Task: Explain why traditional myths like cutting the wound or sucking venom are dangerous, and list the correct scientific first-aid steps for snake bite.
Evaluation & Model Answer:
Why cutting or sucking the wound is hazardous:
Cutting tissue causes severe bleeding, tissue damage, and life-threatening infections. Sucking venom is ineffective because venom spreads swiftly into the lymphatic system and blood, while putting the rescuer at risk of poisoning through mouth cuts.
Correct Scientific First Aid Protocol:
1. Keep the patient calm and still: Any panic, running, or movement speeds up heart rate, accelerating venom distribution.
2. Immobilize the bitten limb: Keep the bitten leg or arm below heart level and apply a clean, broad splint (like a wooden stick or cloth bandage) to prevent movement.
3. Remove tight items: Remove rings, bangles, or tight shoes before swelling occurs.
4. Rush to a hospital immediately: The only effective cure is intravenous administration of Polyvalent Antivenom Serum at a medical facility.
Rubric: 2 Marks for debunking harmful myths + 3 Marks for 4 correct first-aid steps = 5 Marks