The phenomenon known as phototropism is due to the plant hormone _____________,which regulates cell growth.
A) abscisic acid
B) cytokinin
C) auxin
D) gibberellin
Correct Answer:
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Q8: The entire series of events that occur
Q9: Germination of the embryo within the seed
Q10: Some plants reproduce asexually through horizontal stems
Q11: Early in the development of an angiosperm
Q12: Flowers which contain only male or female
Q14: What characteristic describes wind-pollinated plants?
A)Small,greenish flowers
B)Plants grow
Q15: _ is a plant hormone that causes
Q16: In angiosperms,an unusual reproductive process involving two
Q17: Synthetic _,such as 2,4-D,are routinely used to
Q18: The response of plants to touch is
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