Question

Given below is a diagram representing a stage during mitotic cell division in an animal cell:

(i) Identify the above stage. Give a reason to support your answer. 

(ii) Name the parts labelled 1, 2, 3 and 4. 

(iii) What is the function of part 3 ? 

(iv) Name the stage that comes just after the stage shown in the diagram. Draw a well labelled diagram of this stage.

Answer 1

(i) The given stage is prophase of mitosis cell division. In this nuclear membrane and nucleolus disappear sister chromatids attached to centromere. The chromosomes starts moving towards equator. 

(ii) (1) Aster (2) Chromatids (3) Centromere (4) Spindle fibres 

(iii) Function of Part 3—It is the point of attachment to the Structure that pulls the chromatids to opposite ends of the cell during cell division. 

(iv) The stage that comes just after the shown stage is metaphase.