The theory of color vision holds that we perceive colors because of pairs of receptors that make antagonistic responses.

Answer is opponent-process theory.

Further explanation

Color vision

Color vision is a capacity to see contrasts between light made out of various wavelengths freely of light force. Shading recognition is a piece of the bigger visual framework and is intervened by a mind complex process between neurons that starts with differential stimulation of various kinds of photoreceptors by light entering the eye. Those photoreceptors then transmit yields that are then engendered through numerous layers of neurons and afterward at last to the cerebrum.

Color blindness

Such condition in which an animal cannot differentiate in colors.

Types of color vision

Monochromacy

It is in marine mammals.

Dichromacy

It is present in non-primate mammals.

Trichromacy

It is seen in primates.

Tetrachromacy

Mostly in amphibians and reptiles.

Pentachromacy

Mostly in birds and insects.

Theories of color vision

Color vision theories are following .

Trichromatic Theory

The trichromatic theory of color vision, otherwise called the Young-Helmholtz hypothesis, expresses that the retina has three receptor cells, which respond to light of three unique wavelengths - red, green and blue. These cells are in charge of the impression of colors.

Opponent-Process Theory

Given by Ewald Hering, the adversary procedure hypothesis expresses that the cone photoreceptors are connected together to frame three contradicting shading sets: blue/yellow, red/green, and dark/white. Initiation of one individual from the pair restrains action in the other. Predictable with this hypothesis, no two individuals from a couple can be seen at a similar area, which clarifies why we don't experience such hues as "somewhat blue yellow" or "red green". This hypothesis likewise clarifies a few sorts of shading vision inadequacy. For instance, individuals with dichromatic lacks can coordinate a test field utilizing just two primaries. Depending upon the lack they will confuse either red and green or blue and yellow.

Answer details

Subject: Biology

Level: High school

Key words

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4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."