Metaphase

Q.

Draw a labeled diagram to show the metaphase stage of mitosis in an animal cell Having 6 chromosomes. [3 MARKS]

Q. Assertion: Interphase is resting stage.
Reason: The interphase cell is metabolically inactive.

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

Q. Spindle fibres are formed between _________ of the chromosome and centrioles.

1. centromere
2. chromatid
3. P arm
4. Q arm

Q.

Identify the stages in mitosis for the given image.

1. Prophase Metaphase Anaphase Telophase Interphase

2. Interphase Prophase Metaphase Anaphase Telophase

3. Anaphase Telophase Interphase Prophase Metaphase

4. Metaphase Anaphase Telophase Interphase Prophase

Q.

Chromosome structure can be studied clearly during which stage?

1. Prophase

2. Metaphase

3. Telophase

4. Interphase

Q.

The diagram given below represents a stage during cell division:

Study the same and answer the questions that follows:

(i) Identify whether it is a plant or an animal cell? Give a reason in support of your answer.

(ii) Name the stage depicted in the diagram. What is the uniques feature observed in this stage?

(iii) Name the type of cell division that occurs during:

1. Replacement of old leaves by new ones. 2. Formation of gametes.

(iv) What is the stage that comes before the stage shown in the diagram?

(v) Draw a neat, labelled diagram of the stage mentioned in (v) above keeping the chromosome number constant.

Q.

Draw a well labelled diagram to show the metaphase stage of mitosis in an animal cell having four chromosomes.

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.

Which statement describes events during interphase of mitosis?

1. Chromosomes line up on the equator of the spindle.

2. Chromatids are pulled apart by spindle fibres.

3. Chromosomes start to coil, becoming shorter and fatter.

4. Chromosomes are replicated ready for the next division.

Q.

Draw a neat labelled diagram to show the Metaphase stage of Mitosis in an animal cell having ‘6’ chromosomes.

Q.

Which of the following happens during Telophase?

1. Chromosomes align themselves along the equator.

2. Centromere is attached to the spindle fibres.

3. Chromosomes reach the opposite poles.

4. Chromatids are pulled to opposite poles.

Q. what is hemizygous chromosome along with diagra

Q.

Which of the following is true about spindle fibres?

1. Chromosomal fibres

2. Interzonal fibres

3. Continuous fibres

4. Interchromosomal fibres

Q.

Name the cell component which is visible only during cell division stages.

__

Q.

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

1. Centromeres split and chromatids separate.

2. DNA duplicates

3. Spindle fibres attach to kinetochores of chromosomes.

4. Nucleolus, Golgi complex and ER reform

Q. During mitosis which of the following disintegrate
(a) nucleolus
(b) nuclear membrane
(c) both (a) and (b)
(d) none of these

Q.

The nucleus of a cell contains two pairs of chromosomes.

Which two nuclei are produced after mitosis?

1. 

2. 

3. 

4. 

Q. Does a telocentric chromosome have only two chromatids?

Q.

Select the wrong statement among the following.

1. In plants both haploid and diploid cells can divide by mitosis

2. In diplontic life cycle, meiosis occurs in zygote.

3. Life cycle in Chlamydomonas is haplontic

4. Life cycle in Marchantia in haplo-diplontic

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. Can any one explain me shortly function of metaphase of Mitosis.

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. Metaphase
2. Telophase
3. Anaphase
4. Prophase

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. 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.

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. Compare meiotic and mitotic telophase.

Q.

Pick the wrong statement about interphase?

1. It is called the resting phase

2. Chromosomes are arranged in the equatorial plane

3. There is DNA replication

4. It is divided into 3 phases

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.

Draw a labelled diagram to show the metaphase stage of mitosis in an animal cell having '6' chromosomes.

Q.

Chromosomes can be counted best at the stage of:

1. Late anaphase

2. Metaphase

3. Late prophase

4. Telophase