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Question (1)

QN001561

Which condition helped the plant in Pot A show maximum growth in Activity 10.1?

(A) Sunlight only
(B) Water only
(C) Sunlight and adequate water
(D) Dark condition with water

Correct Answer: C

Explanation:

Plants require both sunlight and water for proper growth.

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Question (2)

QN001562

In Activity 10.1, the plant in Pot B most likely died because it did not receive

(A) chlorophyll
(B) sunlight
(C) minerals
(D) water

Correct Answer: D

Explanation:

The plant did not get water.

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Question (3)

QN001563

Which observation was made for the plant kept in darkness with water?

(A) Maximum healthy growth
(B) No growth at all
(C) Poor growth despite water availability
(D) Immediate flowering

Correct Answer: C

Explanation:

Sunlight is necessary for healthy plant growth.

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Question (4)

QN001564

Leaves are generally broad and flat because this shape helps them to

(A) absorb minerals from soil
(B) capture more sunlight
(C) reduce respiration
(D) store water only

Correct Answer: B

Explanation:

Broad leaves capture sunlight efficiently.

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Question (5)

QN001565

The green pigment present in leaves that helps in capturing sunlight is called

(A) starch
(B) glucose
(C) chlorophyll
(D) xylem

Correct Answer: C

Explanation:

Chlorophyll is the green pigment in leaves.

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Question (6)

QN001566

During the iodine test, a blue-black colour in the leaf indicates the presence of

(A) protein
(B) fat
(C) chlorophyll
(D) starch

Correct Answer: D

Explanation:

Iodine solution turns blue-black in the presence of starch.

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Question (7)

QN001567

Why is a leaf decolourised before performing the iodine test?

(A) To soften the leaf
(B) To remove starch
(C) To observe colour change clearly
(D) To remove water

Correct Answer: C

Explanation:

Decolourisation helps in observing the blue-black colour clearly.

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Question (8)

QN001568

In Activity 10.2, alcohol is used mainly to

(A) add starch to the leaf
(B) remove green colour from the leaf
(C) increase chlorophyll
(D) harden the leaf

Correct Answer: B

Explanation:

Alcohol removes chlorophyll from the leaf.

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Question (9)

QN001569

Bhaskar kept one plant in sunlight and another in darkness for 36 hours mainly to test the role of

(A) minerals
(B) roots
(C) sunlight in starch formation
(D) stem thickness

Correct Answer: C

Explanation:

The activity checks whether sunlight is needed for starch production.

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Question (10)

QN001570

In the iodine test of a variegated leaf kept in sunlight, which part turned blue-black?

(A) Non-green patches only
(B) Entire leaf
(C) Green patches only
(D) Stem region only

Correct Answer: C

Explanation:

Green patches contain chlorophyll and prepare starch.

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Question (1)

Which condition helped the plant in Pot A show maximum growth in Activity 10.1?

Explanation:

Link:

Question (2)

In Activity 10.1, the plant in Pot B most likely died because it did not receive

Explanation:

Link:

Question (3)

Which observation was made for the plant kept in darkness with water?

Explanation:

Link:

Question (4)

Leaves are generally broad and flat because this shape helps them to

Explanation:

Link:

Question (5)

The green pigment present in leaves that helps in capturing sunlight is called

Explanation:

Link:

Question (6)

During the iodine test, a blue-black colour in the leaf indicates the presence of

Explanation:

Link:

Question (7)

Why is a leaf decolourised before performing the iodine test?

Explanation:

Link:

Question (8)

In Activity 10.2, alcohol is used mainly to

Explanation:

Link:

Question (9)

Bhaskar kept one plant in sunlight and another in darkness for 36 hours mainly to test the role of

Explanation:

Link:

Question (10)

In the iodine test of a variegated leaf kept in sunlight, which part turned blue-black?

Explanation:

Link:

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