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Question (21)

QN007709

In animal cells, cytokinesis usually occurs by:

(A) Cell plate formation
(B) Chromosome duplication
(C) Cleavage furrow formation
(D) Spindle destruction

Correct Answer: C

Explanation:

Animal cells divide by cleavage furrow formation.

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Question (22)

QN007710

Which stage of mitosis is best suited for studying chromosome structure?

(A) Interphase
(B) Prophase
(C) Metaphase
(D) Telophase

Correct Answer: C

Explanation:

Chromosomes are most condensed during metaphase.

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Question (23)

QN007711

The centromere joins:

(A) Two daughter cells
(B) Two chromatids
(C) Two nuclei
(D) Two spindle fibres

Correct Answer: B

Explanation:

Centromere connects sister chromatids.

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Question (24)

QN007712

If a parent cell with 20 chromosomes undergoes mitosis, the total number of chromosomes in two daughter cells together will be:

(A) 10
(B) 20
(C) 40
(D) 80

Correct Answer: C

Explanation:

Each daughter cell gets 20 chromosomes.

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Question (25)

QN007713

Which process ensures equal distribution of chromosomes into daughter cells?

(A) Diffusion
(B) Osmosis
(C) Mitosis
(D) Respiration

Correct Answer: C

Explanation:

Mitosis equally distributes chromosomes.

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Question (26)

QN007714

Meiosis reduces chromosome number to:

(A) Double
(B) Triple
(C) Half
(D) Zero

Correct Answer: C

Explanation:

Meiosis halves the chromosome number.

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Question (27)

QN007715

Which cells in humans are produced by meiosis?

(A) Skin cells
(B) Bone cells
(C) Muscle cells
(D) Sperm cells

Correct Answer: D

Explanation:

Gametes are formed by meiosis.

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Question (28)

QN007716

Crossing over during meiosis results in:

(A) Cell death
(B) Genetic variation
(C) ATP production
(D) Chromosome destruction

Correct Answer: B

Explanation:

Crossing over creates genetic variation.

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Question (29)

QN007717

Which stage of meiosis involves pairing of homologous chromosomes?

(A) Prophase I
(B) Metaphase II
(C) Telophase II
(D) Anaphase II

Correct Answer: A

Explanation:

Homologous chromosomes pair during Prophase I.

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Question (30)

QN007718

If a reproductive cell has 12 chromosomes, how many chromosomes will be present in the body cell of that organism?

(A) 6
(B) 12
(C) 24
(D) 48

Correct Answer: C

Explanation:

Body cells contain double the chromosome number of gametes.

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Question (21)

In animal cells, cytokinesis usually occurs by:

Explanation:

Link:

Question (22)

Which stage of mitosis is best suited for studying chromosome structure?

Explanation:

Link:

Question (23)

The centromere joins:

Explanation:

Link:

Question (24)

If a parent cell with 20 chromosomes undergoes mitosis, the total number of chromosomes in two daughter cells together will be:

Explanation:

Link:

Question (25)

Which process ensures equal distribution of chromosomes into daughter cells?

Explanation:

Link:

Question (26)

Meiosis reduces chromosome number to:

Explanation:

Link:

Question (27)

Which cells in humans are produced by meiosis?

Explanation:

Link:

Question (28)

Crossing over during meiosis results in:

Explanation:

Link:

Question (29)

Which stage of meiosis involves pairing of homologous chromosomes?

Explanation:

Link:

Question (30)

If a reproductive cell has 12 chromosomes, how many chromosomes will be present in the body cell of that organism?

Explanation:

Link:

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