How do fern gametophytes prevent self-fertilization?

a. they dont

b. fern gametophytes produce spores, not gametes

c. they have molecular barriers

d. timing-the sperm are released before the eggs mature

How do fern gametophytes prevent self-fertilization?
d.) Timing== The sperm are released before the eggs mature ( Protoandry )= This is the correct answer.



From = A Botanist

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