ICSE 2019: Given below is a diagram representing a stage during mitotic cell division (Animal Cell).

ICSE 2019:

Q. Given below is a diagram representing a stage during mitotic cell division. Study the diagram and answer the following questions. [5 marks]

(i) Identify the stage by giving a suitable reason.

(ii) Is it a plant or an animal cell? Give a reason to support your answer.

(iii) Draw a neat, labelled diagram of the stage which follows the one shown in the

diagram.

(iv) How many chromosomes will each daughter cell have after the completion of the

above division?

(v) Name the four nitrogenous bases.

Solution: 

This 5 marks question based on Mitotic cell division was asked by ICSE board in the year 2019 in SECTION-II. 

The question tested the knowledge of students on the: 

• Anaphase and Telophase, 
• Identify cell type - Animal cell or Plant cell
• End result of Mitosis - 2 daughter cells
• 4 Nitrogenous bases - A, G, C, T

Let's begin with solving the above mentioned questions:

ANSWERS:

(i) Stage is Anaphase as the two sister chromatids of each chromosome separate and move to opposite poles due to contraction of spindle fibres.

(ii) It is Animal Cell as we can see centrioles present at the opposite poles.

(iii) Next stage is Telophase.

(iv) Each daughter cell will have full set of chromosomes i.e diploid (2n) number of chromosomes.

(v) The four nitrogenous bases are: 

• Adenine (A)
• Guanine (G)
• Cytosine (C)
• Thymine (T)

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