Cell Structure and Function-B Cell Division [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Biology]: Questions 20 - 26 of 39

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Question 20

Question MCQ▾

The replication of nuclear DNA occurs in

Choices

Choice (4)Response

a.

G2 phase

b.

G1 phase

c.

M phase

d.

S phase

Edit

Question 21

Question MCQ▾

The number of chromatids in a chromosome at anaphase is

Choices

Choice (4)Response

a.

1 in mitosis and 2 in meiosis

b.

2 in mitosis and 1 in meiosis

c.

2 each in mitosis and meiosis

d.

2 in mitosis and 4 in meiosis

Edit

Question 22

Question MCQ▾

The process by which the chromosome are separated in the sex cells and their number reduced from the diploid to haploid condition is known as

Choices

Choice (4)Response

a.

mitosis

b.

division

c.

conjugation

d.

meiosis

Edit

Question 23

Question MCQ▾

How many mitotic divisions must occur in a cell of root tip to form 256 cells?

Choices

Choice (4)Response

a.

64

b.

8

c.

128

d.

256

Edit

Question 24

Question MCQ▾

Chromosome number is halved in meiosis during

Choices

Choice (4)Response

a.

telophase-I

b.

metaphase-I

c.

metaphase-II

d.

anaphase-I

Edit

Question 25

Question MCQ▾

Meiosis is significant because

Choices

Choice (4)Response

a.

It restores the original number of chromosome (after fertilization) .

b.

It occurs only in vegetative cells.

c.

There is doubling of DNA contents in the cell.

d.

it produced identical cells.

Edit

Question 26

Question MCQ▾

The no. of chromosome groups at the equatorial plate in metaphase-I of meiosis in plant with 2n = 50 shall be

Choices

Choice (4)Response

a.

100

b.

30

c.

50

d.

25

Edit