Question

Science
NCERT VIII

What are the functions of cone cell and rods in human eye? ​

Answer 1

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Cone cells, or cones, are photoreceptor cells in the retinas of vertebrate eyes (e.g. the human eye). They respond differently to light of different wavelengths, and are thus responsible for color vision and function best in relatively bright light, as opposed to rod cells, which work better in dim light.

Rod cell .

Rod cells are photoreceptor cells in the retina of the eye that can function in less ... On average, there are approximately 92 million rod cells in the human retina

Answer 2

$\underline{\huge\mathfrak{Answer:}}$

$\large\text{The Human Eye:}$

Eye is one of our most important sense organs . The eye enables us to see the various objects around us . The main parts of the Human Eye are :

♦ Cornea.

♦ Iris.

♦ Pupil.

♦ Eye Lens.

♦ Ciliary Muscles.

♦ Retina.

♦ Optic Nerve.

$\large\text{Rods and Cones:}$

The retina of our eye has a large number of light sensitive cells . There are two kinds of light sensitive cells on our retina . They are : $\textbf{rods and cones}$.

♦ Rods : They are the rod-shaped cells present in the retina of an eye which are sentitive to dim light . They are most important to have a vision in dim light ( commonly during night ) . They however do not provide information about the colour of the objects .

♦ Cones : They are cone-shaped cells present in the retina of an eye which are sensitive to bright light . Cones also cause the sensation of colours in objects in our eyes ,i.e, they are respinsible for colour vision . They do not function in dim light .