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Question (31)

QN001591

In Activity 10.8, lime water turned milky due to the presence of excess

(A) oxygen
(B) nitrogen
(C) carbon dioxide
(D) hydrogen

Correct Answer: C

Explanation:

Carbon dioxide turns lime water milky.

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Question (32)

QN001592

Germinating seeds released carbon dioxide because they were undergoing

(A) photosynthesis
(B) transpiration
(C) respiration
(D) germination only

Correct Answer: C

Explanation:

Respiration releases carbon dioxide.

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Question (33)

QN001593

During respiration, glucose is broken down in the presence of

(A) carbon dioxide
(B) chlorophyll
(C) oxygen
(D) nitrogen

Correct Answer: C

Explanation:

Oxygen is used during respiration.

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Question (34)

QN001594

Which process releases energy for growth and development in plants?

(A) Transportation
(B) Respiration
(C) Photosynthesis only
(D) Absorption

Correct Answer: B

Explanation:

Respiration releases energy.

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Question (35)

QN001595

Which statement is correct regarding respiration in plants?

(A) Only green parts respire
(B) Only roots respire
(C) Only leaves respire
(D) All parts of plants respire

Correct Answer: D

Explanation:

Every living part of a plant respires.

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Question (36)

QN001596

A student keeps a plant in sunlight but removes carbon dioxide around one leaf using caustic soda. The leaf will most likely

(A) form starch normally
(B) turn red
(C) not show starch formation
(D) release extra oxygen

Correct Answer: C

Explanation:

Carbon dioxide is essential for photosynthesis.

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Question (37)

QN001597

Which combination is essential for starch formation in leaves?

(A) Water and oxygen only
(B) Sunlight and chlorophyll only
(C) Carbon dioxide and minerals only
(D) Sunlight, chlorophyll, water, and carbon dioxide

Correct Answer: D

Explanation:

All these factors are needed for photosynthesis.

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Question (38)

QN001598

If stomata are blocked completely, the plant will face difficulty mainly in

(A) seed germination
(B) gas exchange
(C) root growth
(D) flower formation

Correct Answer: B

Explanation:

Stomata are responsible for exchange of gases.

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Question (39)

QN001599

A plant with green leaves is kept in complete darkness for several days. Which change is most likely to occur?

(A) More starch formation
(B) No respiration
(C) Reduced starch production
(D) Increased oxygen release

Correct Answer: C

Explanation:

Sunlight is necessary for starch production.

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Question (40)

QN001600

Kamala Sohonie is known for her contribution in the study of

(A) xylem transport
(B) respiration in plants
(C) seed dispersal
(D) chlorophyll discovery

Correct Answer: B

Explanation:

She contributed to the study of respiration in plants.

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Question (31)

In Activity 10.8, lime water turned milky due to the presence of excess

Explanation:

Link:

Question (32)

Germinating seeds released carbon dioxide because they were undergoing

Explanation:

Link:

Question (33)

During respiration, glucose is broken down in the presence of

Explanation:

Link:

Question (34)

Which process releases energy for growth and development in plants?

Explanation:

Link:

Question (35)

Which statement is correct regarding respiration in plants?

Explanation:

Link:

Question (36)

A student keeps a plant in sunlight but removes carbon dioxide around one leaf using caustic soda. The leaf will most likely

Explanation:

Link:

Question (37)

Which combination is essential for starch formation in leaves?

Explanation:

Link:

Question (38)

If stomata are blocked completely, the plant will face difficulty mainly in

Explanation:

Link:

Question (39)

A plant with green leaves is kept in complete darkness for several days. Which change is most likely to occur?

Explanation:

Link:

Question (40)

Kamala Sohonie is known for her contribution in the study of

Explanation:

Link:

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