Question

Nastic movements differ from tropic movement in being:

A. directional with stimulus

B. non-directional with respect to stimulus

C. controlled by turgor pressure

D. controlled by chemicals

• A. A and C
• B. B and D
• C. Only B
• D. None of these

Answer 1

The correct option is C

Only B

The correct answer is Option C.

Explanation of correct option:

1. Nastic movements differ from tropic movements in that tropic responses are determined by the direction of the stimulus, but nastic movements are not.
2. The tropic movement is a growing movement, but the nastic movement isn't always a growth movement.
3. There is no directed movement in a nastic movement when stimuli are present.
4. These motions always occur in the same direction, regardless of the type of stimulus.

Final Answer: Nastic movements differ from tropic movement in being non-directional with respect to stimulus.