ICSE 2018:
Q. The diagram given below represents a stage during cell division. [5 marks]
Study the same and answer the questions that follow:
(i) Identify whether it is a plant cell or an animal cell. Give a reason in support of your answer.
(ii) Name the stage depicted in the diagram. What is unique feature observed in this stage?
(iii) Name the type of cell division that occurs during:
1. Replacement of old leaves by new ones.
2. Formation of gametes.
(iv) What is the stage that comes before the stage shown in the diagram?
(v) Draw a neat, labelled diagram of the stage mentioned in (iv) above keeping the chromosome number constant
Solution:
This 5 marks question based on Mitotic cell division was asked by ICSE board in the year 2018 in SECTION-II.
The question tested the knowledge of students on the:
- Prophase and Metaphase,
- Identify cell type - Animal cell or Plant cell
- Diagram of Prophase
Let's begin with solving the above mentioned questions:
ANSWERS:
(i) It is Animal cell as it lacks cell wall and has centriole.
(ii) Metaphase.
The unique feature of metaphase is that the chromosomes are arranged at the equatorial plate.
(iii) 1. Replacement of old leaves by new ones : Mitosis
2. Formation of gametes : Meiosis
(iv) Prophase comes before metaphase.
(v)
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