Chapter 17: Seedless Vascular Plants


Reproductive Systems; p. 397; moderate; ans: c



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Chapter 17-final
Chapter 18-final
13. Reproductive Systems; p. 397; moderate; ans: c

In ferns, antheridiogens induce antheridia in _______ gametophytes.


a. all

b. larger, less mature

c. smaller, less mature

d. larger, more mature

e. smaller, more mature
14. Reproductive Systems; p. 398; moderate; ans: a

Heterospory differs from homospory in that heterospory involves:


a. gametophytes with endosporic development.

b. larger gametophytes.

c. bisexual gametophytes.

d. spores differentiated on the basis of size not function.

e. different types of spores produced in the same sporangium.
15. Reproductive Systems; p. 398; moderate; ans: d

Which of the following is NOT an evolutionary trend in the vascular plants?


a. Nutritional dependency of the gametophyte on the sporophyte

b. Reduction in size of the gametophyte

c. Reduction in complexity of the gametophyte

d. Increased prominence of antheridia and archegonia

e. Decreased reliance on water for transferring sperm to egg


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