How does the interaction between pollen and stigma in flowering plants compare to the interaction between bindin and its egg-cell receptor in sea urchins?
A)The specificity between these interactions prevents fertilization from occurring between members of different species.
B)The specificity between these interactions promotes self-fertilization (the union of sperm and egg from the same individual).
C)The specificity between these interactions promotes double fertilization.

Question

Quizplus · Accepted Answer

Both interactions involve specific recognition and binding between molecules on the surface of the pollen/stigma or bindin/egg-cell receptor. This specificity ensures that fertilization only occurs between members of the same species, preventing hybridization between different species.

How Does the Interaction Between Pollen and Stigma in Flowering