Experiments on cocklebur have shown that the ______ perceives the photoperiod.
A) apical meristem
B) columella
C) leaf blade
D) petiole
E) stem
Correct Answer:
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Q2: Which of the following statements concerning hydrotropism
Q3: In roots and shoots, the statoliths are:
A)chloroplasts.
B)amyloplasts.
C)plasma
Q4: Light with a wavelength of about _
Q5: According to the original hypothesis on negative
Q6: In the current model of root gravitropism,
Q7: Which of the following statements about thigmotropism
Q8: Which of the following statements concerning the
Q9: Suppose lettuce seeds are exposed to a
Q10: When lettuce seeds are exposed to red
Q11: Which of the following statements about Pr
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