Question

Write the importance of rods and cones of retina

Answer 1

There are two types of photoreceptors in the human retina, rods and cones.

Rods are responsible for vision at low light levels (scotopic vision). They do not mediate color vision, and have a low spatial acuity.

Cones are active at higher light levels (photopic vision), are capable of color vision and are responsible for high spatial acuity. The central fovea is populated exclusively by cones. There are 3 types of cones which we will refer to as the short-wavelength sensitive cones, the middle-wavelength sensitive cones and the long-wavelength sensitive cones or S-cone, M-cones, and L-cones for short.

Answer 2

HEY...!!

☆☆HERE'S YOUR ANSWER....!!☆☆


There are two kinds of cells:-

(i) $<b>Cones,</b>$ which are sensitive to bright
light and

(ii) $<b>Rods,</b>$ which are sensitive to dim light.

Besides, cones sense colour.




$<b>Retina</b>$

▪Behind the pupil of the eye is a lens
which is thicker in the centre.

▪The lens focuses light on the
back of the eye, on a layer called retina

▪Retina contains several
nerve cells. Sensations felt by the nerve
cells are then transmitted to the brain
through the optic nerve.

----------------------------------------
----------------------------------------

$<b><marquee>♡Thankyoü...!!♡</marquee>$