Question

plz give me the right answer of these question​

Answer 1

Question -

Identify the stage. Give reason for your answer.

Answer -

$\implies$The stage in the diagram shown is Anaphase.

$\implies$In the Anaphase the centromere of each Chromosome divides to form two daughter chromosomes.

$\implies$They remain attached to poles through spindle fibres and start moving towards pole and become shortened.

$\implies$Reason - In the diagram, the centromere of chromosomes are getting separated to different poles, which happens only in Anaphase.

$\implies$(If it would have been metaphase then the chromosomes would be aligned at centre.)

Question -

Name the parts labelled 1, 2 and 3.

Answer -

$\implies$1 - Centrioles

$\implies$2 - Spindle Fibres

$\implies$3 - Centromere

Question -

What is the chromosome number of the cell?

Answer -

$\implies$Each species has fixed number of chromosomes in its cell.

$\implies$In the human cell 23 pairs of chromosomes are present.

$\implies$The two chromosomes of same type are called as homologous chromosomes.

Question -

Draw a neat, labelled diagram of the cell as it would appear in next stage. Name the stage.

Answer -

(refer to the attachment)

$\implies$The stage that will occur after Anaphase is Telophase.

Telophase - Nucleus is reconstituted, chromosomes uncoil, elongate and form chromatin fibres. Nucleus and nuclear meambrane reappears.