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ICSE Class 10 Biology Question 16 of 18

Structure of Chromosomes, Cell Cycle and Cell Division — Question 7

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Question 7

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

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. Identify the stage. Give one reason in support of your answer. Cell Cycle, Cell Division, Chromosomes, Concise Biology Solutions ICSE Class 10.

(a) Identify the phase.

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

(c) Identify whether these are animal cells or plant cell? Give reasons.

Answer

(a) It is Metaphase.

(b) The diploid number of chromosomes shown in them is 4.

(c) Categorisation of cell A, B and C are as given below:

  • Cell A - It is an animal cell as the centrosome has split into two centrioles and the centrioles have formed asters. Also, no cell wall is present.
  • Cell B - It is an animal cell as the centrosome has split into two centrioles and the centrioles have formed asters. Also, no cell wall is present.
  • Cell C - It is a plant cell as no centrioles are seen and cell wall is present.