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Question (31)

QN001711

Which process in plants is responsible for continuous energy supply?

(A) Photosynthesis
(B) Respiration
(C) Transpiration
(D) Pollination

Correct Answer: B

Explanation:

Respiration provides continuous energy.

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Question (32)

QN001712

If respiration stops in a plant, the plant will eventually die because

(A) water transport increases
(B) no energy will be available for life processes
(C) chlorophyll disappears immediately
(D) oxygen production increases

Correct Answer: B

Explanation:

Energy is essential for life processes.

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Question (33)

QN001713

Which activity demonstrates that plants release carbon dioxide?

(A) Coloured water movement
(B) Iodine test of leaves
(C) Germinating seeds with lime water
(D) Leaf decolourisation

Correct Answer: C

Explanation:

Lime water turning milky shows carbon dioxide release.

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Question (34)

QN001714

Which of the following respires throughout the day and night?

(A) Only green leaves
(B) Only roots
(C) Entire living plant
(D) Only flowers

Correct Answer: C

Explanation:

All living parts respire continuously.

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Question (35)

QN001715

During respiration, glucose combines with oxygen mainly inside the

(A) stomata
(B) chloroplast
(C) cells
(D) root hairs

Correct Answer: C

Explanation:

Respiration occurs inside cells.

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Question (36)

QN001716

Which scientist from India made important contributions related to respiration in plants?

(A) C.V. Raman
(B) Kamala Sohonie
(C) Homi Bhabha
(D) Vikram Sarabhai

Correct Answer: B

Explanation:

Kamala Sohonie researched plant respiration.

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Question (37)

QN001717

Kamala Sohonie worked extensively on improving the nutritive value of

(A) metals
(B) plant foods
(C) animal tissues
(D) fuels

Correct Answer: B

Explanation:

She improved nutritive values of plant foods.

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Question (38)

QN001718

Which process maintains the balance of carbon dioxide and oxygen in nature along with photosynthesis?

(A) Pollination
(B) Respiration
(C) Seed dispersal
(D) Germination

Correct Answer: B

Explanation:

Respiration helps maintain gas balance.

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Question (39)

QN001719

In a sealed bottle garden, plants survive because

(A) respiration and photosynthesis balance gas exchange
(B) no respiration occurs
(C) oxygen is supplied from outside continuously
(D) plants do not require carbon dioxide

Correct Answer: A

Explanation:

Photosynthesis and respiration balance gases inside the bottle.

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Question (40)

QN001720

Which of the following would most directly reduce the rate of respiration in germinating seeds?

(A) Providing sunlight
(B) Lowering oxygen availability
(C) Increasing chlorophyll
(D) Increasing leaf size

Correct Answer: B

Explanation:

Oxygen is required for respiration.

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Question (31)

Which process in plants is responsible for continuous energy supply?

Explanation:

Link:

Question (32)

If respiration stops in a plant, the plant will eventually die because

Explanation:

Link:

Question (33)

Which activity demonstrates that plants release carbon dioxide?

Explanation:

Link:

Question (34)

Which of the following respires throughout the day and night?

Explanation:

Link:

Question (35)

During respiration, glucose combines with oxygen mainly inside the

Explanation:

Link:

Question (36)

Which scientist from India made important contributions related to respiration in plants?

Explanation:

Link:

Question (37)

Kamala Sohonie worked extensively on improving the nutritive value of

Explanation:

Link:

Question (38)

Which process maintains the balance of carbon dioxide and oxygen in nature along with photosynthesis?

Explanation:

Link:

Question (39)

In a sealed bottle garden, plants survive because

Explanation:

Link:

Question (40)

Which of the following would most directly reduce the rate of respiration in germinating seeds?

Explanation:

Link:

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