The carpogonium is the female organ in the Red Algae which have a highly specialized type of reproduction. It contains the reproductive nucleus. It may contain a number of cells usually without chloroplasts. It shows an elongated process which is the receptive organ for the male gametes.

What are carpogonia in example?

: the egg-bearing portion of the female reproductive organ in some red algae.

What is the function of a trichogyne?

The trichogyne functions as a receptive organ. As the spermatium comes in the vicinity of the carpogonium, it gets attached to the trichogyne. Common walls dissolve at the point of attachment.