Discovered in 2007, the hormones that control the timing of flowering are called:
A) auxins.
B) florigens.
C) cytokinins.
D) ethylenes.
E) abscisic acids.
Correct Answer:
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Q14: Which of these hormones helps plants tolerate
Q15: The synthetic herbicide 2,4-D is actually a(n):
A)cytokinin.
B)ethylene
Q16: How a plant cell responds to a
Q17: Gravitropism is a plant's:
A)directional response to gravity.
B)response
Q18: Seed germination is stimulated by:
A)auxin.
B)gibberellin.
C)cytokinin.
D)ethylene.
E)abscisic acid.
Q20: The hormone _ was named after the
Q21: Placing a ripe apple in a bag
Q22: The relative sizes of roots and shoots
Q23: Ethylene:
A)promotes gravitropism.
B)inhibits stem elongation.
C)prevents leaf senescence.
D)stimulates seed
Q24: Suppose you have some seeds that refuse
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