Cell Cycle And Cell Division Chapter-Wise Test 6

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following occurs at the end of meiosis?

Two diploid daughter cells
Four haploid daughter cells
One diploid daughter cell
Four diploid daughter cells
2

Meiosis results in the formation of four genetically distinct haploid cells.

During which phase of mitosis does chromatin condense into visible chromosomes?

Anaphase
Metaphase
Prophase
Telophase
3

During prophase, chromatin condenses into distinct chromosomes, making them visible under a microscope.

Which of the following statements about meiosis is incorrect?

Meiosis results in four haploid cells
Meiosis increases genetic variation
Meiosis is a type of asexual reproduction
Crossing over occurs during meiosis
3

Meiosis is a type of sexual reproduction, not asexual reproduction.

What is the role of kinetochores during cell division?

Act as sites of spindle fiber attachment
Aid in chromosome condensation
Synthesize DNA
Help in cell plate formation
1

Kinetochores are protein structures on the centromere where spindle fibers attach to move chromosomes.

What is the primary purpose of meiosis II?

To separate homologous chromosomes
To reduce chromosome number by half
To separate sister chromatids
To replicate DNA
3

Meiosis II is similar to mitosis and is responsible for the separation of sister chromatids into different cells.

How does meiosis contribute to genetic variation?

By ensuring identical copies of DNA are passed to daughter cells
Through crossing over and independent assortment
By producing diploid gametes
Through DNA replication in meiosis II
2

Meiosis introduces genetic variation through crossing over during prophase I and independent assortment during metaphase I.

What is the role of kinetochores during cell division?

They initiate DNA replication
They help in chromosome movement by attaching to spindle fibers
They synthesize spindle fibers
They dissolve the nuclear membrane
2

Kinetochores are protein structures at the centromere that facilitate chromosome movement by attaching to spindle fibers.

Which of the following is NOT a characteristic feature of telophase in mitosis?

Chromosomes decondense
Spindle fibers disassemble
Nuclear membrane reforms
Centromeres divide
4

Centromeres divide in anaphase, not telophase. In telophase, chromosomes decondense and the nuclear membrane reforms.

Which of the following is incorrect about metaphase I of meiosis?

Homologous chromosomes align at the metaphase plate
Spindle fibers attach to kinetochores
Sister chromatids separate
Independent assortment occurs
3

In metaphase I, homologous chromosomes align at the metaphase plate, but sister chromatids remain together.

Which of the following statements about chromatin and chromosomes is correct?

Chromatin is the condensed form of chromosomes
Chromosomes exist only during cell division
Chromatin is composed of DNA and proteins
Chromosomes remain decondensed throughout mitosis
3

Chromatin consists of DNA and proteins (mainly histones) and condenses into chromosomes during cell division.

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