Multiple Choice
We know from the experiments of the past that plants bend toward light because
A) they need sunlight energy for photosynthesis.
B) the sun stimulates stem growth.
C) cell expansion is greater on the dark side of the stem.
D) auxin is inactive on the dark side of the stem.
E) phytochrome stimulates florigen production.
Correct Answer:

Verified
Correct Answer:
Verified
Q98: A botanist exposed two groups of the
Q99: Which of the following conclusions is supported
Q100: In nature, poinsettias bloom in early March.
Q101: In order for a plant to initiate
Q102: This experiment suggests that the unknown amount
Q104: Evidence for phototropism due to the asymmetric
Q105: The detector of light during de-etiolation (greening)of
Q106: How may a plant respond to severe
Q107: The houseplants in a windowless room with
Q108: According to modern ideas about phototropism in