Anaphase

Q. In anaphase of mitosis:

(a) Chromosomes move to spindle equator and get aligned along metaphase plate.

(b) Centromere of each chromosome is towards the equator when chromosomes move away from the equatorial plate.

(c) Each chromosome arranged at the metaphase plate is split simultaneously.

1. a and b are incorrect and c is correct
2. b and c are incorrect and a is correct
3. a and c are incorrect and b is correct
4. a, b and c are correct

Q. Which phase of cell cycle is of shortest duration?

1. Prophase
2. Metaphase
3. Anaphase
4. Telophase

Q. Phase of shortest duration is

1. Metaphase
2. Anaphase
3. Prophase
4. S-phase

Q. Which fibres are required during anaphase to move chromosomes from equator to the poles?

1. Chromosomal fibre
2. Interzonal fibre
3. Both a and b
4. Any protein fibre

Q. Identify the phase of mitosis and structure labelled as X in the image given below.

1. Metaphase, spindle fibre
2. Anaphase, centriole
3. Metaphase, centriole
4. Prophase, centriole

Q.

Match the stages of mitosis listed in column I with the important events pertaining to respective stages given under column II; and choose the answer which gives the correct combination of alphabets of the two columns:

$\begin{array}{cccc}& ColumnIStagesofmitosis& & ColumnIIImportantevents\\ A& \text{Interphase}& p& \text{Equatorial plate formation}\\ B& \text{Metaphase}& q& \text{Daughter chromosomes move to opposite poles}\\ C& \text{Anaphase}& r& \text{Centrioles divde}\\ & & s& \text{Synthetic phase}\end{array}$

1. A = s, B = p, C = q

2. A = s, B = r, C = p

3. A = r, B = s, C = p

4. A = s, B = q, C = p

Q.

Movement of the chromatids towards the opposite poles of the cell is called:

1. Karyokinesis

2. Cytokinesis

3. Metakinesis

4. Prometaphase

Q. Which phase of cell cycle is of shortest duration?

1. Prophase
2. Metaphase
3. Anaphase
4. Telophase