Question

As the nights get longer and the temperatures become cooler, some plants
A. enter a state of dormancy, or inactivity.
B. enter a state where their cells divide and the plant reproduces.
C. enter a state where they begin to sprout leaves.
D. enter a state where the plant responds to touch.

A vine growing around a lamp post is an example of
A. geotropism.
B. thigmotropism.
C. phototropism.
D. photoperiodism.
Multiple Choice
Students planted three bean seeds. After several days, they observed that the seeds’ roots were growing downward into the soil. Which type of tropism were the roots displaying?
A. geotropism
B. thigmotropism
C. phototropism
D. photoperiodism

A tree that sheds its leaves in the fall is exhibiting
A. geotropism.
B. thigmotropism.
C. phototropism.
D. photoperiodism.

Which of the following is necessary for plants to exhibit phototropism?
A. gravity
B. touch
C. auxin
D. dormancy

Answer 1

Answer:

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