How Does the Interaction Between Pollen and Stigma in Flowering

question 24

Multiple Choice

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.

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