Photosynthesis and Modes of Nutrition MCQs
Photosynthesis and Modes of Nutrition MCQs
Class: 7 | Subject: Science
Section: Nutrition in Plants and Animals
Topic: Photosynthesis and Modes of Nutrition
Based on NCERT | As per CBSE Board Examination Pattern
Section: Nutrition in Plants and Animals
Topic: Photosynthesis and Modes of Nutrition
Based on NCERT | As per CBSE Board Examination Pattern
Instructions: These Multiple Choice Questions (MCQs) are designed strictly as per the NCERT syllabus, making them ideal for CBSE Class 7 Science exams standard.
1. Photosynthesis occurs in which part of the plant?
Answer: C. Leaves
Leaves contain chlorophyll and are the main site where photosynthesis takes place.
2. The energy source for photosynthesis is:
Answer: B. Sunlight
Sunlight provides the energy required to convert raw materials into food.
3. Autotrophs are organisms that:
Answer: B. Make their own food
Autotrophs like green plants synthesize food using sunlight.
4. Heterotrophs depend on:
Answer: B. Other organisms
They cannot prepare their own food and rely on others.
5. Which is a parasitic plant?
Answer: B. Cuscuta
Cuscuta obtains nutrition from host plants.
6. Insectivorous plants obtain:
Answer: B. Nitrogen
They trap insects to fulfill nitrogen deficiency.
7. Saprotrophs feed on:
Answer: B. Dead matter
They secrete enzymes to digest dead organic matter.
8. The tiny pores on leaves are:
Answer: B. Stomata
Stomata allow exchange of gases.
9. Mode of nutrition in fungi:
Answer: B. Saprotrophic
Fungi absorb nutrients from decaying matter.
10. Lichens represent:
Answer: B. Symbiosis
Algae and fungi live together benefiting each other.
11. Chlorophyll is present in:
Answer: B. Leaves
Chlorophyll traps sunlight for photosynthesis.
12. Food prepared in leaves is transported through:
Answer: B. Phloem
Phloem transports prepared food to all plant parts.
13. Raw material absorbed from soil:
Answer: B. Water
Roots absorb water needed for photosynthesis.
14. Oxygen released during photosynthesis is a:
Answer: A. Waste product
Oxygen is released into the atmosphere.
15. Nutrition in animals is:
Answer: B. Heterotrophic
Animals depend on plants/other animals for food.
16. Pitcher plant digests insects using:
Answer: B. Enzymes
Digestive juices break down insects.
17. Desert plants are often insectivorous because soil lacks:
Answer: B. Nitrogen
They supplement nitrogen by trapping insects.
18. The ultimate source of food on Earth is:
Answer: B. Sun
All food chains begin with solar energy.
19. Organisms feeding on dead plants are:
Answer: B. Saprotrophs
They recycle nutrients in ecosystems.
20. Photosynthesis helps maintain:
Answer: B. Oxygen balance
It releases oxygen essential for life.