Light rays entering the eye are controlled by the:
Correct answer: B. Iris
- A. Pupil
- B. Iris
- C. Cornea
- D. lens
Explanation
In the question, you are asked about the structure that controls the entry of light into the eye. The correct answer is the iris (option B), which controls the size of the pupil, thereby regulating the amount of light entering the eye.
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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