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The structure labelled I is…

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Use the diagram below to answer questions 48 and 49.

The type of protective adaptation exhibited by the animal is

The structure labelled I is

A. tactile

B. radiosensitive

C. photosensitive

D. chemoreceptive




The structure labelled I is called whisker or vibrissae, it is very sensitive to touch (tactile), and used by rats to find their way in the dark.

Now for the right answer to the above question:

  1. Option A is correct. The structure labelled I is one of the stiff mouth hairs called whiskers, it is highly sensitive to touch.
  2. Option B is incorrect. They are not sensitive to radiation.
  3. C is incorrect; they are not sensitive to light.
  4. D is not the correct answer. They are not receptive to chemicals.


You may please note that:

  • Tactile means sensitivity to touch.

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/ culled from 2015 JAMB-UTME biology past question 49 /

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