Which of the Following Sex and Generation Combinations Most Directly

Question

Which of the following sex and generation combinations most directly produces the pollen tube?
A)male gametophyte
B)female gametophyte
C)male sporophyte
D)female sporophyte

Accepted Answer

The pollen tube is produced by the male gametophyte, specifically by the tube cell located within the male gametophyte. The female gametophyte (B) produces the egg cell and synergids, but not the pollen tube. The sporophytes (C and D) produce the sporangia that undergo meiosis to form spores, which eventually develop into the gametophytes, but they do not directly produce the pollen tube.