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General Biology

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Set 29 Plant Diversity I How Plants Colonized Land

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Question 1

(Multiple Choice)

Free
The following traits provide supporting evidence that charophyceans are the closest relatives of land plants,with the exception of the fact that

A)both groups have rings of cellulose synthesizing proteins.
B)in both groups, a phragmoplast forms between daughter nuclei of dividing cells.
C)both groups have alternation of generation.
D)both groups contain peroxisome enzymes.
E)the structure of flagellated sperm is similar in both groups.

Answer

Question 2

(Multiple Choice)

Free
The most direct ancestors of land plants were probably ________.

A)kelp (brown alga)that formed large beds near the shorelines
B)green algae
C)photosynthesizing prokaryotes (cyanobacteria)
D)liverworts and mosses

Answer

Question 3

(Multiple Choice)

Free
Some green algae exhibit alternation of generations.All land plants exhibit alternation of generations.No charophytes exhibit alternation of generations.Keeping in mind the recent evidence from molecular systematics,the correct interpretation of these observations is that

A)charophytes are not related to either green algae or land plants.
B)plants evolved alternation of generations independently of green algae.
C)alternation of generations cannot be beneficial to charophytes.
D)land plants evolved directly from the green algae that perform alternation of generations.
E)scientists have no evidence to indicate whether or not land plants evolved from any kind of alga.

Answer