Cell Cycle and Cell Division Test

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Cell Cycle and Cell Division Test - 11

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Weekly Quiz Competition

Question 1
1 / -0

Chromosome replicate in which stage of Meiosis?

A
Prophase I

B
Prophase II

C
Telophase I

D
Interphase
Solution
- Interphase is divided into three phases, G$$_1$$ (first gap), S (synthesis) and G$$_2$$ (second gap).
- During all three phases, the cell grows by producing proteins and cytoplasmic organelles.
- However, chromosomes are replicated only during the S phase.
- It is the preparatory phase for the cell before cell division.
So, the correct answer is option D.
Question 2
1 / -0

Chromosome start separating at which stage of mitosis?

A
Early metaphase

B
Late metaphase

C
Early anaphase

D
Early telophase

Solution

During mitosis, anaphase stage is characterized by splitting of the centromere. At anaphase stage, each chromosome splits at the centromere and start moving towards the two opposite poles.
So, the correct answer is option C.
Question 3
1 / -0

G$$_{1}$$, G$$_{2}$$ and S phases are seen in which phase of cell cycle?

A
Metaphase

B
Prophase

C
Anaphase

D
Interphase

Solution

Interphase is the longest phase of the cell cycle. It is comprised of G$$_1$$ or first growth phase, synthesis or S phase and G$$_2$$ or second growth phase.
Thus, the correct answer is (D).
Question 4
1 / -0

Meiosis is found in which of the following option?

A
Shoot apex

B
Reproductive part

C
Leaves bud

D
Vegetative parts

Solution

During mitosis, chromosome number remains the same and cells increase in number. Mitosis is the cell division that occurs in the meristematic tissue. Daughter cells produced after meiosis are haploid. Meiosis is the cell division that occurs in gametangia or reproductive parts to produce gametes.
So, the correct answer is option B.
Question 5
1 / -0

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

A
Division

B
Mitosis

C
Conjugation

D
Meiosis

Solution

Meiosis is the type of cell division in which homologous chromosomes separate after the exchange of fragments. As a result of meiosis, four haploid cells are produced which are all genetically different from each other. It mainly occurs in reproductive cell.
So, the correct answer is option D.
Question 6
1 / -0

Which of the following characters is not related to telophase?

A
Formation of nuclear membrane

B
Formation of nucleolus

C
Increase in the number of chromosome

D
Formation of two daughter nuclei

Solution

Telophase stage is the stage of reconstitution of nuclei. Chromosomes uncoil, elongate, lose their stainability and form chromatin fibers. Nucleoplasm and nuclear envelope appear so that two daughter nuclei are formed.
So, the correct answer is option C.
Question 7
1 / -0

Which of the following constituent protein are present in mitotic spindle?

A
Tubulin

B
Myosin

C
Tropomyocin

D
Dynein

Solution

The mitotic spindle is made up of the protein tubulin. A spindle fiber consists of 4-20 microtubules formed of the protein tubulin. It is a cytoskeleton protein composed of two types of subunits called as $$\alpha$$ and $$\beta$$ subunits.
So, the correct answer is option A.
Question 8
1 / -0

During mitosis, chromosomes go to their poles in a stage called as

A
Prophase

B
Metaphase

C
Anaphase

D
Telophase

Solution

During anaphase, the two sister chromatids separate to move towards opposite poles. Chromosomes move towards opposite poles with the centromeres projecting towards the poles and limbs trailing behind.
So, the correct answer is option C.
Question 9
1 / -0

During the meiotic division, the

A
Homologous chromosomes are separated.

B
The linkage is disturbed.

C
The homologous chromosomes do not segregate.

D
All of the above.

Solution

Meiosis is a type of division in which mother cell divides twice after one round of DNA replication. In meiosis I homologous chromosomes pair, exchange segments and then separate, i.e., each chromosome of a homologous pair goes to opposite pole. Thus, reducing the number of chromosomes to one half. Second division or meiosis II is normal equational division like mitosis.
Question 10
1 / -0

In somatic cell cycle

A
A short interphase is followed by a long mitotic phase

B
DNA replication takes place in S phase

C
In G$$_{1}$$phase, DNA content is double the amount of DNA present in the original cell

D
None of these

Solution

The interphase of a typical cell cycle comprises of G$$_1$$ phase, S phase and G$$_2$$ phase. The S phase stands for synthesis phase in which DNA replication occurs followed by synthesis of histones.
So, the correct answer is option B.

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Cell Cycle and Cell Division Test - 11

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Cell Cycle and Cell Division Test - 11

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Question 1

Prophase I

Prophase II

Telophase I

Interphase

Solution

Question 2

Early metaphase

Late metaphase

Early anaphase

Early telophase

Solution

Question 3

Metaphase

Prophase

Anaphase

Interphase

Solution

Question 4

Shoot apex

Reproductive part

Leaves bud

Vegetative parts

Solution

Question 5

Division

Mitosis

Conjugation

Meiosis

Solution

Question 6

Formation of nuclear membrane

Formation of nucleolus

Increase in the number of chromosome

Formation of two daughter nuclei

Solution

Question 7

Tubulin

Myosin

Tropomyocin

Dynein

Solution

Question 8

Prophase

Metaphase

Anaphase

Telophase

Solution

Question 9

Homologous chromosomes are separated.

The linkage is disturbed.

The homologous chromosomes do not segregate.

All of the above.

Solution

Question 10

A short interphase is followed by a long mitotic phase

DNA replication takes place in S phase

In G$$_{1}$$phase, DNA content is double the amount of DNA present in the original cell

None of these

Solution

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