Cell Cycle And Cell Division Chapter-Wise Test 11

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following events occurs during zygotene of prophase I?

Synapsis between homologous chromosomes
Crossing over between non-sister chromatids
Chiasmata formation
Nuclear membrane breaks down
1

During zygotene, homologous chromosomes pair up in a process called synapsis.

Which of the following statements about metaphase is incorrect?

Chromosomes align at the metaphase plate
Spindle fibers attach to kinetochores
Nuclear membrane reforms
Metaphase is the stage where chromosomes are most condensed
3

During metaphase, the nuclear membrane remains absent; it reforms during telophase.

Which of the following events occurs during telophase II of meiosis?

Chromosomes condense
Spindle fibers form
Nuclear membrane reappears
Homologous chromosomes separate
3

During telophase II, the nuclear membrane reforms around the newly separated chromosomes.

Which of the following occurs during zygotene of prophase I?

Chromosomes start pairing to form bivalents
Chromosomes condense into distinct structures
Crossing over takes place
Sister chromatids separate
1

During zygotene, homologous chromosomes start pairing, a process called synapsis, forming bivalents.

What is the key difference between cytokinesis in plant and animal cells?

Plant cells divide by furrowing, while animal cells form a cell plate
Animal cells divide by furrowing, while plant cells form a cell plate
Both plant and animal cells use the same mechanism
Animal cells use microtubules, while plant cells do not
2

Animal cells divide through cleavage furrow formation, while plant cells form a cell plate during cytokinesis.

How does mitosis differ from meiosis?

Mitosis produces four cells, while meiosis produces two
Mitosis results in haploid cells, while meiosis results in diploid cells
Mitosis maintains chromosome number, while meiosis reduces it
Mitosis involves two rounds of division, while meiosis has one
3

Mitosis maintains the chromosome number, while meiosis reduces it by half, ensuring haploid gamete formation.

Which checkpoint ensures that DNA replication is complete before mitosis begins?

G1 checkpoint
G2 checkpoint
M checkpoint
S checkpoint
2

The G2 checkpoint ensures that DNA replication is complete and checks for errors before the cell enters mitosis.

Which of the following statements about cytokinesis is correct?

Cytokinesis follows nuclear division
Cytokinesis is the same in both plant and animal cells
Cytokinesis is not required for cell division
Cytokinesis only occurs in mitosis
1

Cytokinesis occurs after nuclear division and differs between plant and animal cells.

Which of the following is incorrect about meiosis I?

It includes crossing over
It produces diploid daughter cells
It reduces the chromosome number by half
It includes prophase, metaphase, anaphase, and telophase
2

Meiosis I produces haploid daughter cells, not diploid.

Which of the following occurs during the S phase of interphase?

The cell grows in size
DNA is replicated
Chromosomes align at the equatorial plate
Nuclear membrane breaks down
2

DNA replication occurs in the S phase, ensuring each daughter cell receives an identical set of genetic material.

Performance Summary

Score:

Category Details
Total Attempts:
Total Skipped:
Total Wrong Answers:
Total Correct Answers:
Time Taken:
Average Time Taken per Question:
Accuracy:
0