Significance of Mitosis

Q.

What is Karyokinesis?

Q.

Mitosis is called equational division because

1. Both parent and daughter cell has the same number of chromosomes

2. Parent cell gives rise to 2 daughter cells

3. It occurs in all somatic cells

4. The chromosomes line themselves on the equatorial plane

Q.

If the somatic cell in an organism has 40 chromosomes, how many chromosomes will be present in each of the resultant cells, once a cell in this organism undergoes meiosis?

1. 80 chromosomes

2. 20 chromosomes

3. 40 chromosomes

4. Not enough information in the question to calculate the number of chromosomes.

Q.

Does cytokinesis occur in meiosis?

Q.

What uses mitosis to reproduce?

Q.

Assertion: Mitosis maintains the genetic similarity of somatic cells.
Reason: Chromosomes do not undergo crossing over during mitosis.

1. Both assertion and reason are true and the reason is the correct explanation for the assertion.
2. Both the reason and assertion are true but the reason is not the correct explanation for the assertion
3. Assertion is true but reason is false
4. Both the reason and assertion are false

Q.

State whether the following statement is true or false. If false, rewrite the correct form of the statement by changing the first or last word only.

Mitosis is the type of cell division occurring in the cells of injured parts of the body.

1. True

2. False

Q.

Which of the following is not a function of cell division?

1. Reproduction of multicellular organisms

2. Aerobic cellular respiration of multicellular organisms.

3. Reproduction of single-celled organisms

4. Repair of multicellular organisms

Q.

Skin cells are continuously replaced by the process of

Q.

Which of the following characteristics of mitosis is NOT correct?

1. 
   Mitosis occurs in somatic cells

2. 2N----->N

3. 
   Mitosis is important for growth and repair of multicellular organisms

4. 2N----->2N

Q.

Match the following time spans with their actual phases in a eukaryotic cell cycle.

$\begin{array}{cc}\text{Table I}& \text{Table II}\\ \text{I) 10 hr}& \text{a. M Phase}\\ \text{II) 9 hr}& \text{b.}{G}_1\text{Phase}\\ \text{III) 4 hr}& \text{c. S Phase}\\ \text{IV) 1 hr}& \text{d.}{G}_2\text{Phase}\end{array}$

1. i).➡ a., ii).➡ b., iii).➡ c., iv). ➡ d.

2. i).➡ d., ii).➡ c., iii).➡ b., iv). ➡ a.

3. i).➡ c., ii).➡ d., iii).➡ a., iv). ➡ b.

4. i).➡ b., ii).➡ a., iii).➡ d., iv). ➡ c.

Q.

New cells are produced through mitosis for

1. Repair

2. Cell renewal

3. Production of gametes

4. Growth

Q.

How does mitosis help us survive?

Q.

Why is mitosis called equational division?

Q.

Which of these statements regarding mitosis is true?

1. It is referred to as a reductional division.

2. In one division, one cell produces four cells.

3. It produces gametes.

4. It is referred to as an equational division.

Q. can anyone tell the number of mitotic divisions for formation of 64 daughter cells

Q. Choose the cells that are formed through the process of mitosis.

1. Muscle cells
2. Skin cells
3. Stomach cells
4. Plant Spores
5. WBC
6. Sperm
7. RBC
8. Ova

Q.

Number of cells produced after mitosis.

1. One

2. Two

3. Four

4. Three

Q. Choose the correct answers from the alternatives given :
Genetic information in a DNA molecule is coded in the

1. sequence of nucleotides
2. base pairings
3. turning pattern of the helix
4. proportion of each base present

Q. Cancer is:

1. Air borne disease
2. Viral disease
3. Environmental disorder
4. Cellular disease

Q.

How many mitotic divisions are needed for a single cell to make 128 cells?

1. 14

2. 7

3. 28

4. 6

Q.

how many mitotic divisions are required to produce 256 cells ?also explain .

Q. Arrange the following stages of mitosis in proper order.

A. 1, 2, 4, 3

B. 2, 1, 4, 3

C. 4, 2, 1, 3

D. 2, 3, 1, 4

Q. Mitosis is called equational division because

1. Parent cell gives rise to 2 daughter cells
2. It occurs in all somatic cells
3. The chromosomes line themselves on the equatorial plane
4. Both parent and daughter cell has the same number of chromosomes

Q.

How many mitotic divisions are needed for a single cell to make 128 cells?

1. 7

2. 14

3. 28

4. 6

Q.

Why is mitosis called equational division? [1 Mark]

Q.

Which two processes together constitute the M phase of the cell cycle?

1. Interphase and mitosis

2. Mitosis and cytokinesis

3. Interphase and metaphase

4. G0, S and G1 phase

Q. Chromosomes number is halved in
(a) meiosis I
(b) Meiosis II
(c) mitosis
(d) amitosis

Q. Crossing over is a feature of
(a) meiosis
(b) mitosis
(c) amitosis
(d) none of these