Question

Q-15 Define osmosis. Give two examples where osmosis is helpful?
Q-16 Differential between the cell division process of mitosis and meiosis.
Q-17 Why cell division is necessary?
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Answer 1

Answer:

15 ans..)))---

Osmosis is the movement of water through a semi-permeable membrane from a region of high concentration to a region of low concentration, tending to equalise the concentrations of the water....

16 ans..)))---

Mitosis involves the division of body cells, while meiosis involves the division of sex cells. ... Two daughter cells are produced after mitosis and cytoplasmic division, while four daughter cells are produced after meiosis. Daughter cells resulting from mitosis are diploid, while those resulting from meiosis are haploid.

17 ans..)))---

Cell division serves as a means of reproduction in unicellular organisms through binary fission. ... For growth to occur in living organisms, the number of cells have to increase through cell division until it reaches its maximum size. The human body also repairs injuries by means of cell division.

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