Question

Given below are two statements: One labelled as Assertion A and the other labelled as Reason R:
Assertion A: The first stage of gametophyte in the life cycle of moss is protonema stage.
Reason R: Protonema develops directly from spores produced in capsule.
In the light of the above statements, choose the most appropriate answer from the options given below:

• A. Both A and R are correct but R is not the correct explanation of A
• B. A is correct but R is not correct
• C. A is not correct but R is correct
• D. Both A and R are correct and R is correct explanation of A

Answer 1

Answer: (D)

Both A and R are correct and R is correct explanation of A

Answer 2

The given assertion and its reason are both correct, as gametophytes in the moss life cycle undergo 3 stages that are:

• SPORE $\rightarrow$ protonema $\rightarrow$ gametophyte plant body.
• First, the spore converts into a protonema, which is a thread-like structure; after that, it matures to form mature gametophytes.

So, the correct option is (A): Both A and R are correct and R is correct explanation of A.