Practice

Life Processes in Plants — Practice

15 questions 15 min Recall + understand

Q1. In Activity 10.1, three earthen pots A, B and C of the same size are filled with garden soil and similar saplings of which fast-growing plant are planted in each pot?
- A. Wheat or rice
- B. Chilli or tomato
- C. Mango or neem
- D. Money plant or rhoeo
Q2. In Activity 10.1, which pot's plant is expected to show the maximum growth after two weeks?
- A. Pot A — in direct sunlight, with water
- B. Pot B — in direct sunlight, without water
- C. Pot C — in the dark, with water
- D. All three grow equally
Q3. Based on Activity 10.1, the main inference is that plants require
- A. Only water for their growth
- B. Only sunlight for their growth
- C. Both sunlight and water for their growth
- D. Neither sunlight nor water
Q4. In the chapter, which part of a plant is referred to as the 'food factory' of the plant?
- A. The root
- B. The stem
- C. The flower
- D. The leaf
Q5. Leaves are mostly green because of the presence of a green pigment called
- A. Iodine
- B. Chlorophyll
- C. Starch
- D. Glucose
Q6. In Activity 10.2, the green part of a leaf turns blue-black after adding iodine solution. This colour change indicates the presence of
- A. Chlorophyll
- B. Oxygen
- C. Starch
- D. Carbon dioxide
Q7. Plants store food in the form of
- A. Starch, a type of carbohydrate
- B. Glucose, a type of fat
- C. Protein, a type of vitamin
- D. Oxygen, a type of gas
Q8. The process by which plants prepare their food in the presence of sunlight and chlorophyll is called
- A. Respiration
- B. Transpiration
- C. Digestion
- D. Photosynthesis
Q9. Which of the following is NOT a requirement for photosynthesis?
- A. Sunlight
- B. Oxygen
- C. Carbon dioxide
- D. Chlorophyll
Q10. The tiny pores present on the surface of leaves that help in the exchange of gases are called
- A. Xylem
- B. Phloem
- C. Stomata
- D. Veins
Q11. What is the main function of stomata in plants?
- A. Exchange of gases between the leaf and the atmosphere
- B. Transport of water from roots to leaves
- C. Transport of food from leaves to other parts
- D. Storage of starch in the leaves
Q12. Water and minerals absorbed by the roots are transported to the leaves and other parts of the plant through
- A. Phloem
- B. Stomata
- C. Chlorophyll
- D. Xylem
Q13. The food prepared in the leaves is transported to other parts of the plant through
- A. Xylem
- B. Phloem
- C. Stomata
- D. Roots
Q14. Which parts of the plant carry out respiration?
- A. Only the green leaves
- B. Only the roots
- C. All parts of the plant, green or non-green
- D. Only the flowers
Q15. Which pair correctly lists the raw materials for photosynthesis and respiration in a plant?
- A. Photosynthesis: carbon dioxide + water; Respiration: glucose + oxygen
- B. Photosynthesis: glucose + oxygen; Respiration: carbon dioxide + water
- C. Photosynthesis: oxygen + water; Respiration: glucose + carbon dioxide
- D. Photosynthesis: glucose + water; Respiration: oxygen + carbon dioxide

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