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

If you’re preparing for your CBSE Class 7 Science exam, mastering Nutrition in Plants Class 7 MCQ is crucial. The chapter “Nutrition in Plants” forms the foundation of understanding how plants make their food, acquire nutrients, and survive. Solving Class 7 Science Chapter 1 MCQ will help students reinforce their concepts and improve their exam readiness.

The topic of Nutrition in Plants MCQ Class 7 covers essential concepts such as autotrophic and heterotrophic modes of nutrition, the role of chlorophyll in photosynthesis, and the significance of stomata. Practicing these MCQs will test your understanding of plant nutrition processes and ensure you can confidently answer related exam questions. Since multiple-choice questions focus on critical concepts, it’s important to pay attention to details while revising this chapter.

In MCQ Science Class 7 Chapter 1, students will encounter questions about the process of photosynthesis, which is how green plants produce their food. Important points like the role of sunlight, water, and carbon dioxide in the process are frequently asked in exams. Additionally, questions may cover the significance of nutrients such as nitrogen, phosphorus, and potassium for plant growth. These nutrients are absorbed from the soil through the plant’s root system, making it vital to understand the absorption process.

Key terms such as autotrophs, heterotrophs, saprotrophs, and parasitic plants are important in the context of Nutrition in Plants MCQ. Understanding these concepts will help students identify different types of plant nutrition and recognize the functions of organisms like fungi and algae. Moreover, the chapter explores symbiotic relationships in plants, where organisms such as Rhizobium bacteria in legumes play a vital role in nitrogen fixation.

Practicing Nutrition in Plants Class 7 MCQ ensures you cover essential subtopics like the importance of chlorophyll, the structure of stomata, and the role of sunlight in photosynthesis. By regularly attempting Class 7 Science Chapter 1 MCQ, students can improve their recall ability and excel in their science exams.

To gain confidence, students should solve sample MCQ Science Class 7 Chapter 1 questions frequently and focus on understanding the reasoning behind each answer. This practice will enhance conceptual clarity and boost exam performance.

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 class 7 extra questions with answers mcq:

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

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

Ans. Autotrophic

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

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

Ans. Leaves

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

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

Ans. Chlorophyll

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

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

Ans. Stomata

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

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

Ans. Autotrophs

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

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

Ans. Carbon dioxide

7. Which of the following is a parasite?

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

Ans. Cuscuta

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

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

Ans. 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

Ans. Plants that feed on dead and decaying matter

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

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

Ans. Bacteria

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

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

Ans. 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

Ans. It captures light energy

13. Which type of nutrition do fungi use?

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

Ans. 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

Ans. 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

Ans. Glucose

17. Which gas is absorbed by plants during photosynthesis?

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

Ans. Carbon dioxide

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

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

Ans. 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

Ans. 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

Ans. Symbiotic

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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

Ans. 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

Ans. To synthesize proteins

23. How do plants absorb minerals from the soil?

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

Ans. 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

Ans. 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

Ans. From the insects they trap

26. What are lichens an example of?

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

Ans. 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

Ans. They decompose dead organic matter

28. What type of plant is Cuscuta?

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

Ans. 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

Ans. 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

Ans. Opening and closing of stomata

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

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

Ans. Leaf

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

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

Ans. Autotrophs

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

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

Ans. Chlorophyll

34. What process do fungi use to obtain nutrients?

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

Ans. Saprotrophic nutrition

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

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

Ans. 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

Ans. To fix nitrogen

37. What do legumes use to fix nitrogen?

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

Ans. 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

Ans. To add nutrients

39. Plants absorb nutrients through their _______.

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

Ans. 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

Ans. Phosphorus

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

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

Ans. 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

Ans. Nitrogen

43. How many essential nutrients does a plant require?

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

Ans. 17

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

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

Ans. 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

Ans. 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

Ans. 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

Ans. 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

Ans. Leaf

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

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

Ans. Autotrophs

FAQs on Nutrition in Plants Class 7 MCQ