Question

Assertion (A): The embryo with 8 to 16 blastomeres is called a morula.

Reason (R): The morula continues to divide and transform into trophoblast.

Options

• Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).

• Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).

• Assertion (A) is true, but Reason (R) is false.

• Assertion (A) is false, but Reason (R) is true.

Answer 1

Assertion (A) is true, but Reason (R) is false.

Explanation:

• The assertion is correct; an embryo of about 8-16 blastomeres is called a morula.
• Reason is incorrect: the morula continues dividing to form a blastocyst, and it is the blastocyst whose outer cell layer becomes the trophoblast (the inner cell mass gives rise to the embryo).