Last Updated on 23 April 2025 by editablematerials.in
CBSE Class 7 Science Chapter 1 Case Study Questions – based on Nutrition in Plants – help students understand how plants obtain and use nutrients. This chapter explores photosynthesis, types of nutrition in plants, and how plants like Cuscuta or Pitcher plants obtain food.
The questions below are designed according to the CBSE Class 7 competency-based format, focusing on real-life application, reasoning, and observation-based skills.
🔍 Chapter Summary
In this chapter, students learn about the mode of nutrition in plants. Green plants synthesize their food using sunlight, carbon dioxide, water, and chlorophyll through the process called photosynthesis. The chapter also explains other modes of nutrition like parasitic, insectivorous, saprotrophic, and symbiotic nutrition, along with the importance of nutrient replenishment in soil through natural processes like nitrogen fixation.
📝 Case Study Question 1
Read the passage and answer the questions:
Riya’s class conducted an experiment to prove that leaves are the food factories of plants. They used iodine to test for starch in leaves and noticed that leaves exposed to sunlight turned blue-black. Their teacher explained that photosynthesis occurs only in green parts and in the presence of light.
Answer the following:
- What is the role of sunlight in photosynthesis?
- Which pigment in leaves helps in capturing sunlight?
- What is the name of the test used to detect starch in leaves?
- Name the raw materials required for photosynthesis.
Answers:
- Sunlight provides energy to synthesize food.
- Chlorophyll
- Iodine test
- Carbon dioxide, water, sunlight, and chlorophyll
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📝 Case Study Question 2
Read the passage and answer the questions:
A science group project required Ramesh and his friends to collect examples of plants that do not make their own food. They found Cuscuta growing on a tree and observed a pitcher plant in the botanical garden. Their teacher explained that not all plants are autotrophs.
Answer the following:
- What kind of nutrition does Cuscuta exhibit?
- Why does the pitcher plant trap insects even though it is green?
- What term is used for organisms that depend on others for food?
- What do we call plants that eat insects?
Answers:
- Parasitic nutrition
- To get additional nutrients like nitrogen
- Heterotrophs
- Insectivorous plants
📝 Case Study Question 3
Read the passage and answer the questions:
During the rainy season, Sneha noticed fungus growing on bread and leather. Her teacher told her that these organisms are fungi and they feed on decaying matter. In the school lab, students observed fungi under the microscope and learned about saprotrophic nutrition.
Answer the following:
- What is saprotrophic nutrition?
- Give two examples of saprotrophs.
- Which conditions help fungi grow?
- What is the term used for organisms that feed on dead and decaying matter?
Answers:
- It is the mode of nutrition where organisms absorb nutrients from dead matter.
- Bread mould, mushrooms
- Moisture, warmth, organic matter
- Saprotrophs
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More Case Study Questions from Class 7 Science
- CBSE Class 7 Science Chapter 2 Case Study Questions with Answers – Nutrition in Animals
- CBSE Class 7 Science Chapter 1 Case Study Questions with Answers – Nutrition in Plants
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❓ Frequently Asked Questions (FAQs)
Q1: Are these questions based on the latest CBSE Class 7 Science syllabus?
A1: Yes, all questions follow the latest NCERT syllabus and CBSE competency-based question format.
Q2: Can I use these questions for class assignments or tests?
A2: Absolutely! These case studies are ideal for worksheets, oral discussions, or written tests.
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Q5: Do you provide questions for other chapters too?
A5: Yes, we’re uploading chapterwise case study questions for Classes 6 to 12.
Q6: What are the best websites for my CBSE Preparation?
A6: Some of the best website for CBSE is Physics Gurukul, Xam Content and Success Router. They are having a large collection of CBSE resources.
✨ Conclusion
Understanding plant nutrition is essential for grasping how life on Earth depends on green plants. These case study questions for Chapter 1 – Nutrition in Plants help students connect textbook knowledge to real-world observations and improve their analytical skills.
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