Multiple Choice
What is one main effect of auxins on plant growth?
A) They reduce growth by inducing leaves to fall.
B) They increase growth by promoting cell elongation.
C) They increase growth by increasing the rate of photosynthesis.
D) Auxins have no effect on plant growth.
Correct Answer:

Verified
Correct Answer:
Verified
Q13: Which process underlies the thigmotropic behavior of
Q14: Which plant response is affected by photoperiod?<br>A)
Q15: One experiment in phototropism involved cutting off
Q16: Plant hormones<br>A) must be produced in large
Q17: If the auxin that is produced by
Q19: Ethylene triggers the ripening of fruit for
Q20: Ethylene triggers the ripening of fruit for
Q21: Which class of hormones produced in the
Q22: Iris is a long-day plant that normally
Q23: Which type of plant hormone generally acts