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 |
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 |
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 |
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 |
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 |
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. |
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 |