Shown below are four stages (A, B, C, D) (not in sequence) of a certain kind of cell division.

(a) Is it a plant cell or an animal cell? Give two reasons. ………………..

(b) Is it undergoing mitosis or meiosis?

(c) What should be the correct sequence of these four stages among themselves?

(d) Name the stage that should precede the earliest of these stages.............................

(e) Draw the stage named above inside the blank space provided.

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

The diagram given below represents a certain phenomenon which occurs during meiosis. Name and explain the phenomenon by using the terms - homologous chromosomes, chromatids, crossing-over.

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

Examine it carefully and answer the questions which follow.

(a) Identify the stage. Give one reason in support of your answer.

(b) Name the cell organelle that forms the 'aster'.

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

(d) Name the stage that follows the one shown here.

How is that stage identified?

(e) Mention two differences between mitosis and meiosis with regard to:

(i) The number of daughter cells produced.

(ii) The chromosome number of the daughter cells.

Given ahead are three diagrammatic sketches (A, B and C) of one and the same particular phase during the mitotic type of cell division.

(a) Identify the phase....................

(b) What is the diploid number of chromosomes shown in them? ....................

(c) Identify whether these are animal cells or plant cells?

A ...............................................,

B ...............................................,

C ...............................................,

(d) Which of these is/are shown in the correct direction? (Tick mark the correct answer).

(i) Only A (ii) Only B

(iii) Only A and C (iv) All the three