The compound known as 2,4-D
A) is a synthetic gibberellin.
B) is a synthetic auxin.
C) promotes roots in tissue culture.
D) is responsible for dwarfism.
E) is an essential plant hormone.
Correct Answer:
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Q6: In the 1920s Friedrich Went, a plant
Q7: Which of the following growth responses is
Q8: Phototropism in plants is the
A) bending of
Q9: The plant hormone, indole-3-acetic acid (IAA) is
Q10: Amyloplasts contain
A) auxin.
B) plastids.
C) root cap cells.
D)
Q12: In gravitropism, the plant root bends. This
Q13: IAA produces a phototropic response in plants
A)
Q14: IAA is thought to be involved in
Q15: The plant hormones known as cytokinins are
Q16: Synthetic growth retardants
A) reduce vegetative plant growth.
B)
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