Human Eye and Colorful World Chapter 2 Quiz

To keep the eye dark by absorbing diffused light falling on it and to avoid internal reflections within the eye.

1 mm

To provide the finer adjustment of focal length required to focus objects at different distances on the retina.

<p>Tough, white, and opaque</p> Signup and view all the answers

<p>Cornea</p> Signup and view all the answers

<p>To control the light level inside the eye.</p> Signup and view all the answers

<p>To carry electrical signals to the brain.</p> Signup and view all the answers

<p>It increases.</p> Signup and view all the answers

<p>At the center of the retina.</p> Signup and view all the answers

<p>It does not have light sensitive cells (rods and cones) and no signal is sent to the brain when the image is formed on this part.</p> Signup and view all the answers

<p>The chick's retina consists of very few rod shaped cells, so it can only see in bright light.</p> Signup and view all the answers

<p>The retina of bees contains cone cells which are sensitive to ultra-violet light, while human beings do not have those cone cells.</p> Signup and view all the answers

<p>To serve as a sensitive screen for the reception of the image formed by the lens system of the eye.</p> Signup and view all the answers

<p>They control the focal length of the eye lens.</p> Signup and view all the answers

<p>To the choroids.</p> Signup and view all the answers

<p>The yellow spot is most sensitive to light and the blind spot does not have light sensitive cells, affecting the visibility of objects.</p> Signup and view all the answers