Abscission affects
A) leaves.
B) fruits.
C) flowers.
D) all of these.
E) none of these.
Correct Answer:
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Q29: Short-day plants
A) flower in early spring.
B) will
Q30: Even though the autumn may be unusually
Q31: Photoperiodism is the _.
A) duration of
Q57: Active phytochrome controls
A)flowering and seed set.
B)seed germination.
C)stem
Q58: Which is (are) the principal substance(s) that
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Q62: The aging of a plant is
A)senescence.
B)vernalization.
C)abscission.
D)dormancy.
E)chlorosis.
Q63: Every choice below EXCEPT _ is a
Q65: All the processes that lead to the
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