The phytochrome that is active and absorbs far-red light is:
A) Pr.
B) Pfr.
C) Pa.
D) Pe.
Correct Answer:
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Q46: The process of aging is called:
A)maturation.
B)elongation.
C)abscission.
D)death.
E)senescence.
Q47: Willow trees and many other plants produce
Q48: At night, when little red light is
Q49: If a storm breaks off the top
Q50: Short-day plants flower only if:
A)the duration of
Q52: Plants that flower in Canada in August
Q53: Senescence in plants usually involves:
A)shade from other
Q54: If a plant is living under conditions
Q55: Some plants under attack by insects can
Q56: The phytochrome Pr:
A)is very unstable.
B)is the active
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