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Neural Control and Coordination — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYNeural Control and Coordination1 Mark
MCQ
The iris of eye is: 
  • A
    Photosensitive
  • B
    Chemoreceptor
  • C
    Both A and B
  • D
    All of the above
✓

Answer

  1. Photosensitive

Explanation:

The colored part of the eye is called as the iris. It controls light levels inside the eye. The round opening in the center of the iris is called as the pupil. It is photosensitive in nature and is embedded with tiny muscles that dilate (widen) and constrict (narrow) the pupil size depending on the presence or absence of light.

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