GENERAL KNOWLEDGE

GK

GENERAL SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
True
A
Cone cells detect light and dark
B
Rods focus light
C
Cones detect color
D
Rods detect color
Explanation: 

Detailed explanation-1: -Cones require a lot more light and they are used to see color. We have three types of cones: blue, green, and red. The human eye only has about 6 million cones. Many of these are packed into the fovea, a small pit in the back of the eye that helps with the sharpness or detail of images.

Detailed explanation-2: -Signals from the cones are sent to the brain which then translates these messages into the perception of color. Cones, however, work only in bright light. That’s why you cannot see color very well in dark places. So, the cones are used for color vision and are better suited for detecting fine details.

Detailed explanation-3: -Cones are responsible for color vision. Every green mark on this image is a specific ion channel necessary for the function of these cones. The cones marked in magenta are responsible for detecting colors on the spectrum from red to green. The cones marked in blue are responsible for detecting the color blue.

Detailed explanation-4: -Light travels into the eye to the retina located on the back of the eye. The retina is covered with millions of light sensitive cells called rods and cones. When these cells detect light, they send signals to the brain. Cone cells help detect colors.

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