CBSE Class 7 Science Chapter 1 Nutrition in Plants MCQ Questions with Answers

Clear you botany concepts with our comprehensive nutrition in plants class 7 MCQ. CBSE Class 7 Science Chapter 1, “Nutrition in Plants,” explores the fascinating mechanisms by which plants feed themselves. We’ve developed an extensive set of nutrition in plants MCQ questions with answers to help students thoroughly understand the concepts and excel in their studies.

Our class 7 science chapter 1 MCQ collection tests a range of key topics, from photosynthesis to nutrient cycles, making it an invaluable resource for revision. Each question is crafted to align with the CBSE syllabus, ensuring that students are well-prepared and confident. Get ready to tackle your exams with our class 7 science chapter 1 MCQ with answers, designed to enhance your learning experience and academic performance. You can also download NCERT solutions for class 7 Science.

CBSE Class 7 Science Syllabus

Science Chapter 1 Nutrition in Plants Class 7 MCQ with Answers

Here are the set of various Nutrition in Plants MCAQ with answers:

1. What is the primary mode of nutrition in plants?

1. Heterotrophic
2. Autotrophic
3. Saprotrophic
4. Parasitic

Sol: Autotrophic

2. Which part of the plant is mainly involved in the absorption of light energy?

1. Roots
2. Stem
3. Leaves
4. Flowers

Sol: Leaves

3. What is the green pigment called that is essential for photosynthesis?

1. Xanthophyll
2. Chlorophyll
3. Anthocyanin
4. Carotene

Sol: Chlorophyll

4. Through which part of the plant does carbon dioxide enter the leaves?

1. Stomata
2. Cuticle
3. Root hair
4. Petals

Sol: Stomata

5. What are the organisms called that synthesize their food from inorganic materials?

1. Autotrophs
2. Heterotrophs
3. Saprotrophs
4. Parasites

Sol: Autotrophs

6. Which of the following is not a product of photosynthesis?

1. Oxygen
2. Carbon dioxide
3. Water
4. Carbohydrate

Sol: Carbon dioxide

7. Which of the following is a parasite?

1. Algae
2. Cuscuta
3. Mushroom
4. Yeast

Sol: Cuscuta

8. What is the process called where plants make their food using sunlight?

1. Respiration
2. Transpiration
3. Photosynthesis
4. Digestion

Sol: Photosynthesis

9. What kind of plants are called saprotrophs?

1. Plants that feed on dead and decaying matter
2. Plants that prepare their own food
3. Plants that feed on insects
4. Plants that feed through parasitic means

Sol: Plants that feed on dead and decaying matter

10. What is nitrogen fixed by in the soil to become usable for plants?

1. Sunlight
2. Chlorophyll
3. Bacteria
4. Fungi

Sol: Bacteria

11. In which part of the plant does photosynthesis primarily occur?

1. Stem
2. Root
3. Leaf
4. Flower

Sol: Leaf

12. What is the role of chlorophyll in photosynthesis?

1. It absorbs carbon dioxide
2. It captures light energy
3. It releases oxygen
4. It transports water

Sol: It captures light energy

13. Which type of nutrition do fungi use?

1. Autotrophic
2. Heterotrophic
3. Saprotrophic
4. Parasitic

Sol: Saprotrophic

14. What are stomata?

1. A type of fungus
2. Small openings on the surface of leaves
3. Water-absorbing roots
4. Part of the flower

Sol: Small openings on the surface of leaves

15. What do guard cells do?

1. Protect the plant from insects
2. Regulate the opening and closing of stomata
3. Absorb minerals from the soil
4. Capture light energy

16. What is the main product of photosynthesis?

1. Nitrogen
2. Oxygen
3. Carbon dioxide
4. Glucose

Sol: Glucose

17. Which gas is absorbed by plants during photosynthesis?

1. Oxygen
2. Nitrogen
3. Carbon dioxide
4. Hydrogen

Sol: Carbon dioxide

18. Which mineral is essential for the synthesis of proteins in plants?

1. Potassium
2. Nitrogen
3. Phosphorus
4. Calcium

Sol: Nitrogen

19. What is transpiration?

1. Absorption of water by roots
2. Loss of water from leaves
3. Synthesis of food in leaves
4. Growth of roots in soil

Sol: Loss of water from leaves

20. What type of relationship do Rhizobium bacteria and leguminous plants have?

1. Parasitic
2. Saprotrophic
3. Symbiotic
4. Predatory

Sol: Symbiotic

21. Why do farmers add manure to the soil?

1. To increase water absorption
2. To add nutrients to the soil
3. To prevent soil erosion
4. To remove weeds

Sol: To add nutrients to the soil

22. What is the main reason plants need nitrogen?

1. To make chlorophyll
2. To create a strong structure
3. To synthesize proteins
4. To store energy

Sol: To synthesize proteins

23. How do plants absorb minerals from the soil?

1. Through leaves
2. Through flowers
3. Through roots
4. Through seeds

Sol: Through roots

24. What happens to oxygen produced during photosynthesis?

1. It is used in respiration
2. It is stored in the leaves
3. It is converted into carbon dioxide
4. It is released into the atmosphere

Sol: It is released into the atmosphere

25. How do insectivorous plants obtain nutrients?

1. Through photosynthesis
2. From the insects they trap
3. From the soil
4. From water

Sol: From the insects they trap

26. What are lichens an example of?

1. Parasitism
2. Symbiosis
3. Saprotrophism
4. Autotrophism

Sol: Symbiosis

27. What role do fungi play in ecosystems?

1. They produce oxygen
2. They decompose dead organic matter
3. They fix nitrogen
4. They absorb light energy

Sol: They decompose dead organic matter

28. What type of plant is Cuscuta?

1. Parasitic
2. Autotrophic
3. Insectivorous
4. Saprotrophic

Sol: Parasitic

29. Why is photosynthesis considered a vital process on Earth?

1. It produces carbohydrates
2. It produces oxygen
3. It regulates temperature
4. It purifies water

Sol: It produces oxygen

30. What do guard cells regulate?

1. Water flow in xylem
2. Sugar transport in phloem
3. Opening and closing of stomata
4. Absorption of sunlight

Sol: Opening and closing of stomata

31. Which plant part acts as the primary site for photosynthesis?

1. Leaf
2. Root
3. Stem
4. Flower

Sol: Leaf

32. What is the term for plants that make their food using inorganic substances?

1. Heterotrophs
2. Autotrophs
3. Saprotrophs
4. Parasites

Sol: Autotrophs

33. What substance in the leaf captures solar energy for photosynthesis?

1. Stomata
2. Cellulose
3. Chlorophyll
4. Cuticle

Sol: Chlorophyll

34. What process do fungi use to obtain nutrients?

1. Photosynthesis
2. Predation
3. Saprotrophic nutrition
4. Symbiotic nutrition

Sol: Saprotrophic nutrition

35. What gas do plants take in that is necessary for photosynthesis?

1. Oxygen
2. Hydrogen
3. Nitrogen
4. Carbon dioxide

Sol: Carbon dioxide

36. What is not a role of nutrients in plants?

1. To build body structures
2. To facilitate growth
3. To synthesize chlorophyll
4. To fix nitrogen

Sol: To fix nitrogen

37. What do legumes use to fix nitrogen?

1. Chlorophyll
2. Stomata
3. Rhizobium bacteria
4. Phloem

Sol: Rhizobium bacteria

38. What is the function of manure added to soil?

1. To increase water retention
2. To kill pests
3. To add nutrients
4. To increase sunlight absorption

Sol: To add nutrients

39. Plants absorb nutrients through their _______.

1. Leaves
2. Flowers
3. Roots
4. Stem

Sol: Roots

40. Which of the following minerals plays a major role in energy storage and transfer of ADP into ATP molecules?

1. Molybdenum
2. Phosphorus
3. None of the above
4. Magnesium

Sol: Phosphorus

41. The main mode of nutrition in plants is __________.

1. Heterotrophic
2. None of the above
3. Autotrophic
4. Saprophytic

Sol: Autotrophic

42. Which of the following minerals helps in improving both the quantity and quality of dry matter in leafy vegetables and protein in grain crops?

1. Molybdenum
2. Nitrogen
3. Iron
4. Copper

Sol: Nitrogen

43. How many essential nutrients does a plant require?

1. 20
2. 16
3. 15
4. 17

Sol: 17

44. Which of the following minerals is required by the plants in large quantities?

1. Molybdenum
2. Manganese
3. Chlorine
4. Phosphorus

Sol: Phosphorus

45. Which of the following statements is false about nutrition?

1. Manganese and molybdenum are micronutrients
2. Nutrition provides energy for carrying out various functions.
3. Plant hormones are nutrients
4. Nitrogen and phosphorus are macronutrients

Sol: Plant hormones are nutrients

46. Chlorosis is yellowing of the leaves, caused due to the deficiency of ________.

1. Manganese
2. All of the above
3. Zinc
4. Potassium

Sol: All of the above

47. Which of the following minerals is required for the synthesis of chlorophyll?

1. Iron
2. Nitrogen
3. Copper
4. Potassium

Sol: Iron

48. Which of the following minerals is a constituent of cell membranes and nucleic acids?

1. Manganese
2. Zinc
3. Phosphorous
4. Potassium

49. What is the primary site for photosynthesis in most plants?

1. Stem
2. Root
3. Leaf
4. Flower

Sol: Leaf

50. What is the term for plants that produce their own food?

1. Heterotrophs
2. Autotrophs
3. Saprotrophs
4. Parasites

Sol: Autotrophs