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Question (31)

QN008119

A farmer wants rapid multiplication of plants without waiting for seed formation. Which reproduction method should be preferred?

(A) Sexual reproduction
(B) Vegetative propagation
(C) Pollination
(D) Fertilisation

Correct Answer: B

Explanation:

Vegetative propagation helps in rapid multiplication of plants without seed formation.

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Question (32)

QN008120

During budding in yeast, the nucleus first

(A) disappears
(B) divides
(C) fuses with another nucleus
(D) forms spores

Correct Answer: B

Explanation:

In budding, the nucleus divides first before the bud grows.

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Question (33)

QN008121

If a yeast cell reproduces by budding every hour and each new cell also buds from the next hour onward, starting from one cell, how many cells will be present after 3 hours?

(A) 2
(B) 4
(C) 6
(D) 8

Correct Answer: D

Explanation:

Number of cells doubles every hour: 1 → 2 → 4 → 8.

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Question (34)

QN008122

Which agricultural practice directly uses the principle of asexual reproduction?

(A) Hybrid seed production
(B) Tissue culture
(C) Cross-pollination
(D) Seed dispersal

Correct Answer: B

Explanation:

Tissue culture is a method of asexual reproduction used in agriculture.

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Question (35)

QN008123

In vegetative propagation, new plants arise mainly from

(A) reproductive organs only
(B) gametes only
(C) vegetative parts
(D) embryos only

Correct Answer: C

Explanation:

Vegetative propagation occurs through roots, stems or leaves.

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Question (36)

QN008124

Why are spores called lightweight reproductive structures?

(A) They contain no nucleus
(B) They are multicellular
(C) They can float through air currents easily
(D) They grow only in water

Correct Answer: C

Explanation:

Spores are very light and easily carried by air currents.

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Question (37)

QN008125

Which condition is essential for germination of fungal spores on bread?

(A) Bright sunlight
(B) Dry conditions
(C) Moisture and warmth
(D) Freezing temperature

Correct Answer: C

Explanation:

Fungal spores germinate best in warm and moist conditions.

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Question (38)

QN008126

If one fungus colony releases 5 million spores and wind destroys 80% before landing, how many spores remain available for germination?

(A) 1 million
(B) 2 million
(C) 3 million
(D) 4 million

Correct Answer: A

Explanation:

Remaining spores = 20% of 5 million = 1 million.

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Question (39)

QN008127

Which feature makes asexual reproduction faster than sexual reproduction?

(A) Need for pollination
(B) Involvement of only one parent
(C) Gamete formation
(D) Fertilisation process

Correct Answer: B

Explanation:

Asexual reproduction involves only one parent and no fertilisation.

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Question (40)

QN008128

Which scientist proved that life does not arise spontaneously from non-living matter?

(A) Mendel
(B) Darwin
(C) Louis Pasteur
(D) Maheshwari

Correct Answer: C

Explanation:

Louis Pasteur proved that life arises from pre-existing life.

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Question (31)

A farmer wants rapid multiplication of plants without waiting for seed formation. Which reproduction method should be preferred?

Explanation:

Link:

Question (32)

During budding in yeast, the nucleus first

Explanation:

Link:

Question (33)

If a yeast cell reproduces by budding every hour and each new cell also buds from the next hour onward, starting from one cell, how many cells will be present after 3 hours?

Explanation:

Link:

Question (34)

Which agricultural practice directly uses the principle of asexual reproduction?

Explanation:

Link:

Question (35)

In vegetative propagation, new plants arise mainly from

Explanation:

Link:

Question (36)

Why are spores called lightweight reproductive structures?

Explanation:

Link:

Question (37)

Which condition is essential for germination of fungal spores on bread?

Explanation:

Link:

Question (38)

If one fungus colony releases 5 million spores and wind destroys 80% before landing, how many spores remain available for germination?

Explanation:

Link:

Question (39)

Which feature makes asexual reproduction faster than sexual reproduction?

Explanation:

Link:

Question (40)

Which scientist proved that life does not arise spontaneously from non-living matter?

Explanation:

Link:

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