A plant growth response to mechanical stress, such as rain and contact with passing animals, is known as:
a. phototropism.
b. gravitropism.
c. thigmomorphogensis.
d. a circadian rhythm.
e. thigmotropism.
ANSWER: c
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A. all members of a species. B. all organisms found in an environment. C. metacommunities. D. families. E. groups of interbreeding populations.
The bones and cartilage in animals serve the same function as ________ in plants?
A. xylem B. leaves C. wood D. capillaries E. phloem
What is NOT true of neutral mutations?
a. they have no effect on an individual b. they accumulate at a constant rate c. they happen at random d. they are relatively rare e. more than one of these is NOT true
Which of the following organs serves as a storage depot for many vitamins and minerals?
What will be an ideal response?