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 in the daughter cells.

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Solution

(a) Late prophase as the nuclear membrane is disappearing.

(b) Centrioles found in animal cell

(c)
1 - Centromere
2 - Chromatids
3 - Spindle fibres

(d) Metaphase, the chromosome arrange in the equatorial plane called metaphase plate.

(e)

Mitosis is a process of asexual reproduction in which the cell divides in two producing a replica, with an equal number of chromosomes in each resulting diploid cell.

Meiosis is a type of cellular reproduction in which the number of chromosomes is reduced by half through the separation of homologous chromosomes, producing two haploid cells.

mitosis meiosis

Number of Daughter Cells produced 2 diploid cells 4 haploid cells

Chromosome Number Remains the same. Reduced by half.

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	mitosis	meiosis
Number of Daughter Cells produced	2 diploid cells	4 haploid cells
Chromosome Number	Remains the same.	Reduced by half.