Question

ASSERTION: stem cell have the property of totipotency.
REASON: stem cell gives rise to many types of cells.

(a) both A and R are true and R is the correct explaination of A.
(b) both A and R are true and R is not the correct explaination of A.
(c) A is true but R is false .
(b) both A and R are false.

Answer 1

Explanation:

Option b

Both are true but R is not correct explanation of A

Answer 2

(a) both A and R are true and R is the correct explanation of A

Explanation:

• The stem cell is produced from the fusion of an egg and sperm cell.

• Cells produced by the first few division of the fertilized egg are also totipotent.

• Embryonic cells within the first couple of cell divisions after fertilization are the only cells that are totipotent.

• Totipotency of stem cells that have the capacity of self renew by dividing and to develop into the three primary germ cell layers.