試題詳解

30. In gymnosperm reproduction, the male gametophyte is:

(A) a pollen grain enclosed within a tough wall.

(B) where sperm fertilizes eggs within the female structure.

(C) a free-living gametophyte developed from released spores.

(D) a nucleus released freely into the ovule without a pollen tube.

(E) an ovule maturing into a fruit after fertilization.