Mesogamy is the process in which:

In an embryo sac,the pollen tube usually enters through:

Pollen grains can be stored for years in ........

Describe pollen-pistil interaction.

How many of the following statements are true about the figure given below?
i. Germination of pollen grain.
ii. Motile male gametes.
iii. Two male gametes and one female gamete.
iv. Pollen grain without exine.
v. Tube nucleus at the tip of pollen tube.

Which structure guides the entry of the pollen tube into the synergids?