Question

ginkgo biloba sperm have __________ (of) flagella propelling the cell into the archegonium. a 1 b 2 c hundreds d thousands

Explanation:

Ginkgo biloba sperm are unique among seed plants in having motile sperm with numerous flagella. While most seed plants have non - motile sperm (pollen tubes deliver sperm in angiosperms and most gymnosperms), Ginkgo biloba (a gymnosperm) has sperm with hundreds of flagella. This is a characteristic feature of its reproductive biology.

Answer:

C. hundreds