Biology for IGCSE & O level - Coordination And Response (Section 1 - No. 50)
Which of the following is an example of a tropic response?
A change in blood glucose level.
A plant growing towards light.
A mammal generating heat to stay warm.
The release of adrenaline from the adrenal glands.
Explanation
Tropic responses are directional growth responses to stimuli.
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