Science · Biology
Consider the following statements: Assertion (A): The trophoblast forms the outer layer of the blastocyst and does not contribute to the embryo proper. Reason (R): The inner cell mass differentiates first into endoderm, which is the earliest germ layer formed. Select the correct option:
- 1Both A and R are true, and R is the correct explanation of A
- 2Both A and R are true, but R is not the correct explanation of A✓
- 3A is true, but R is false
- 4A is false, but R is true
Correct answer
Both A and R are true, but R is not the correct explanation of A
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