CBSE STD 7 SCIENCE - IMPORTANT QUESTIONS

Here is a comprehensive set of 15 multiple-choice questions covering all the key topics from Class 7 CBSE Biology Chapter 1: "Nutrition in Plants". The questions cover: Photosynthesis process and requirements Chlorophyll and chloroplasts Raw materials and products of photosynthesis Types of nutrition (autotrophic and heterotrophic) Parasitic, saprophytic, and insectivorous plants Plant structures like stomata Tests for starch detection Symbiotic relationships Multiple Choice Questions (15 Questions) Instructions: Choose the correct answer for each question. 1. The process by which green plants make their own food is called: a) Respiration b) Photosynthesis c) Transpiration d) Excretion 2. Which of the following is NOT required for photosynthesis? a) Sunlight b) Carbon dioxide c) Water d) Oxygen 3. The green pigment present in leaves that helps in photosynthesis is: a) Xanthophyll b) Carotene c) Chlorophyll d) Anthocyanin 4. The raw materials for photosynthe...

Biology Chapter 1: Nutrition in Plants Short Answer Questions Each question carries 2-3 marks   1. What is photosynthesis? Write the word equation for photosynthesis. 2. Why are green plants called autotrophs? 3. What are stomata? What is their function? 4. Name the four main requirements for photosynthesis. 5. What is chlorophyll? Where is it found in plant cells? 6. Distinguish between autotrophic and heterotrophic nutrition. 7. What are parasitic plants? Give two examples. 8. Why do insectivorous plants eat insects? Name any two insectivorous plants. 9. What is meant by symbiotic relationship? Give one example. 10. How would you test a leaf for the presence of starch? 11. What is saprophytic nutrition? Give two examples of saprophytes. 12. Why do farmers add manure or fertilizers to the soil? 13. What is the role of guard cells in stomata? 14. How do plants obtain carbon dioxide for photosynthesis? 15. Explain why photosynthesis is important for all living organism...