Course

Anatomy & Physiology

Study Pack

Set 33 Plant Diversity

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Question 1

(Multiple Choice)

Free
The increase in opportunities for epiphytes in tropical rainforests following the evolution of angiosperms can be directly traced to the evolution of:

A)a warmer and wetter understory climate once eudicots dominate the canopy.
B)trees with weak apical dominance and xylem composed of fibers and vessels.
C)an increased diversity of animal pollinators.
D)ferns tolerant of understory conditions.

Answer

Question 2

(Multiple Choice)

Free
Approximately 40% of living ferns are tropical epiphytes, a fact that supports the hypothesis that:

A)the origin and eventual domination of angiosperms in tropical forests both displaced and created new opportunities for other plant lineages.
B)plant lineages are conservative in their basic ecology and tend to diversify in the same environments in which they originated.
C)most fern diversity is in temperate forests.
D)epiphytic ferns are all that remain of an ancient diversification of ferns that preceded the evolution of angiosperms.

Answer

Question 3

(Multiple Choice)

Free
Which of the following is a feature of land plants that is also found among the group of green algae from which land plants arose, and, therefore, may represent a "pre-adaptation" to life on land?

A)cuticle
B)multicellular diploid generation
C)sporopollenin
D)chloroplasts

Answer