In the fall, the leaves of some trees change color. This happens because chlorophyll breaks down and the accessory pigments become visible. What hormone triggers this response in plants?
A) phototropin
B) abscisic acid
C) cytokinin
D) ethylene

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The Answer of In the fall, the leaves of some trees change color. This happens because chlorophyll breaks down and the accessory pigments become visible. What hormone triggers this response in plants?
A) phototropin
B) abscisic acid
C) cytokinin
D) ethylene

In the Fall, the Leaves of Some Trees Change Color