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Question (41)

QN008129

A student keeps bread in a refrigerator instead of a warm room. What will most likely happen?

(A) Mould growth becomes faster
(B) Spores die immediately
(C) Mould growth slows greatly
(D) Bread converts into yeast

Correct Answer: C

Explanation:

Low temperature slows down fungal growth and reproduction.

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Question (42)

QN008130

Which reproductive method in plants can produce large numbers of identical plants within a short time under laboratory conditions?

(A) Pollination
(B) Tissue culture
(C) Seed germination
(D) Fertilisation

Correct Answer: B

Explanation:

Tissue culture rapidly produces identical plantlets in laboratories.

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Question (43)

QN008131

In asexual reproduction, offspring are called clones because they

(A) have identical genes to the parent
(B) are formed from two parents
(C) contain half chromosome number
(D) develop through fertilisation

Correct Answer: A

Explanation:

Clones are genetically identical to the parent organism.

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Question (44)

QN008132

A student observes that a Bryophyllum leaf kept on moist soil develops tiny plantlets along its margins. This demonstrates

(A) budding
(B) fragmentation
(C) vegetative propagation
(D) pollination

Correct Answer: C

Explanation:

Bryophyllum reproduces through vegetative propagation by leaves.

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Question (45)

QN008133

Which statement best explains why tissue-cultured banana plants increase crop yield?

(A) They are always seedless
(B) They are virus-free and healthy
(C) They require no nutrients
(D) They cannot reproduce further

Correct Answer: B

Explanation:

Tissue culture produces healthy and disease-free banana plants.

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Question (46)

QN008134

If a single hydra forms one bud every 2 days and buds detach immediately, how many individual hydras can originate from the parent after 8 days?

(A) 2
(B) 3
(C) 4
(D) 5

Correct Answer: D

Explanation:

Hydra forms 4 buds in 8 days; total hydras = 1 + 4 = 5.

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Question (47)

QN008135

Which feature of spores increases the probability of survival of fungi?

(A) Large size
(B) Huge numbers produced
(C) Dependence on pollinators
(D) Presence of chlorophyll

Correct Answer: B

Explanation:

Fungi produce millions of spores, increasing chances of survival.

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Question (48)

QN008136

A farmer wants identical mango plants with desirable fruit quality. Which method is most suitable?

(A) Seed germination
(B) Cross-pollination
(C) Grafting
(D) Spore formation

Correct Answer: C

Explanation:

Grafting helps produce identical plants with desired characteristics.

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Question (49)

QN008137

Which of the following correctly explains the role of mitosis in asexual reproduction?

(A) It halves chromosome number
(B) It creates genetic variation
(C) It produces identical daughter cells
(D) It forms gametes

Correct Answer: C

Explanation:

Mitosis produces daughter cells identical to the parent cell.

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Question (50)

QN008138

Asexual reproduction is especially advantageous when environmental conditions are

(A) rapidly changing
(B) unfavourable
(C) stable and favourable
(D) extremely cold only

Correct Answer: C

Explanation:

Asexual reproduction works best in stable and favourable environments.

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Question (41)

A student keeps bread in a refrigerator instead of a warm room. What will most likely happen?

Explanation:

Link:

Question (42)

Which reproductive method in plants can produce large numbers of identical plants within a short time under laboratory conditions?

Explanation:

Link:

Question (43)

In asexual reproduction, offspring are called clones because they

Explanation:

Link:

Question (44)

A student observes that a Bryophyllum leaf kept on moist soil develops tiny plantlets along its margins. This demonstrates

Explanation:

Link:

Question (45)

Which statement best explains why tissue-cultured banana plants increase crop yield?

Explanation:

Link:

Question (46)

If a single hydra forms one bud every 2 days and buds detach immediately, how many individual hydras can originate from the parent after 8 days?

Explanation:

Link:

Question (47)

Which feature of spores increases the probability of survival of fungi?

Explanation:

Link:

Question (48)

A farmer wants identical mango plants with desirable fruit quality. Which method is most suitable?

Explanation:

Link:

Question (49)

Which of the following correctly explains the role of mitosis in asexual reproduction?

Explanation:

Link:

Question (50)

Asexual reproduction is especially advantageous when environmental conditions are

Explanation:

Link:

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