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Assertion: Mitosis is a type of cell division that results in the formation of two daughter cells, each with the same number of chromosomes as the parent cell.
Reason: Mitosis is also called the equational division because the daughter cells have an equal number of chromosomes as that of parents.
Select the correct option:
Both assertion and reason are correct, and the reason is the correct explanation of the assertion.
Both assertion and reason are correct, but the reason is not the correct explanation of the assertion.
The assertion is correct, but the reason is incorrect.
Both assertion and reason are incorrect.
Answers (1)
The assertion states that "Mitosis occurs due to disturbance in Karyoplasmic Index", which is true as it aligns with the Kern plasm theory proposed by Hertwig. The Karyoplasmic Index of a small cell is high because it has less cytoplasm, which allows the nucleus to efficiently control the activity of the cytoplasm. On the other hand, in a large cell, the nucleus fails to control the activity of cytoplasm. To regain control over the metabolism, a large cell divides into two cells through mitosis.
The reason states that "Mitosis occurs because the surface area of the cell becomes insufficient to draw the material". This is false because the reason is not a correct explanation for the occurrence of mitosis. Mitosis occurs due to the division of the genetic material in the nucleus of the cell, resulting in two identical daughter cells. The reason given here is related to the physical size of the cell, which is not a direct cause of mitosis.
Option 3 is the correct answer.
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