Metaphase

Q.

Select the correct option with respect to mitosis.

1. Golgi complex and endoplasmic reticulum are still visible at the end of prophase

2. Chromosomes align along the equatorial plate in metaphase

3. Chromatids start moving towards opposite poles in telophase

4. Chromatids separate but remain in the centre of the cell in anaphase

Q. The stage at which morphology of chromosomes is easily studied is the stage during which

1. Spindle fibres attach to kinetochores of chromosomes
2. Nucleolus, Golgi complex and ER reform
3. Centromeres split and chromatids separate
4. DNA duplicates

Q.

During metaphase of mitosis, chromosomes:

1. Line up at the equator

2. Break and disintegrate

3. Undergo coiling

4. Move towards the pole

Q.

Choose the incorrect statement(s) regarding Metaphase of Mitosis.

I. Each chromosome splits up to form 2 chromatids.

II. The newly formed chromatids remain united at centromere on two different

kinetochores.

III. Has only one of unit of DNA from each parent.

IV. Spindle fibres attach to centromere to pull the chromatids toward the poles.

1. II & III

2. III & I

3. I & II

4. IV only.

Q. In prophase and metaphase, a chromosome contains two

1. Chromatids
2. Chromomeres
3. Centromeres
4. Centrioles

Q.

Chromosome structure can be studied clearly during which stage?

1. Prophase

2. Metaphase

3. Telophase

4. Interphase

Q. Identify the stage of Mitosis by inspecting the image and key changes listed.

Key changes:
1.Chromosomes are doubled.
2.Spindle fibres attach to the chromosomes.
3.Chromosomes are arranged at equatorial plate.

1. Anaphase

2. Prophase

3. Metaphase

4. Interphase

Q.

If you are provided with root-tips of onion in your class and are asked to count the chromosomes, which of the following stages can you conveniently look into?

1. Telophase

2. Prophase

3. Anaphase

4. Metaphase

Q. In the Metaphase stage of Mitosis, each chromosome consists of _____ chromatid (s), _______ centromere(s), _______kinetochore(s) and ______ unit(s) of DNA .

1. 2, 1, 2, 2

2. 2, 1, 1, 1

3. 2, 1, 2, 1

4. 2, 2, 2, 2

Q.

Chromosomes can be counted best at the stage of:

1. Late anaphase

2. Metaphase

3. Late prophase

4. Telophase