how scientist know animals see in black and white only?

Answer 1

You can cut open an eyeball and see what kinds of cells are in the retina.

Answer 2

Animals dont only see black and white they see shades of gray, green, blue, and some yellows but not reds. Depends on the animals and how dependant on sight they are. Scientists know this because they have studied animals eyes and the amount of Rods and cones in the retina and eye ball. Rods and cones are rescepters of color. IF tehy dont have certian types of rods and cones then they cant see certian colors, or hues and brightness of colors. Also the shape of the eye, the shape of the lens, the depth of the retina and the complexity of the optic nerve will also tell how well the animal sees.

Answer 3

Some animals see differently than we do. Some animals, like bees, have cones for colors we can't see. Others have adaptations for night vision... You can use physical studies in live animals where you flash patterns and see what the eye responds to...It's done under anesthesia, and you measure the response in the animals brain.

Humans have three sets of visual pigments that allow us to see color. Most mammals only have two sets, so while it's likely that they do perceive some colors, their eyes probably don't process as much color information as ours do.

Cats probably have some color vision. They have the ability to detect lights of different colors. But the number of color-perceiving cells cats possess in their retinas is so low, it's debatable whether or not they're actually using color vision.

In dogs, studies have shown that they do use color vision. But they are red/green colorblind, which means that they can't distinguish between those two colors. Red and green probably appear gray to them.

Horses definitely see colors, but also have trouble distinguishing certain ones. Their troubles come mostly with greens and yellows.

In an experiment conducted, horses were always able to pick out red or blue against a gray background, which researchers varied from light gray to dark gray. But horses could only pick out yellow and green reliably when those colors were brighter than the background, which means the horses were relying on the lightness or darkness of the color, not the color itself.

Hope this helped...

Answer 4

In the animal kingdom, sight is accomplished by using either rods or cones
on the retina of the eye. Animals that see black and white and shades of
gray have only the rods in their retina. Animals that see color have both
rods and cones; the cones are for color, but require a lot more light to
stimulate. The bottom line is that animals that see color are diurnal
[daylight] and black and white vision is for nocturnal [night] vision. If
an animal does not see color, it is adapted to night vision.

Answer 5

animals dont see in black in white only. for example, cats can see shades of red, and bees can see ultra violet. that's a color that we cant see.(even though there are crayons with the color on it. ) sorry off topic, but that is a very good question. another is how do i know that you are real or that i am tnot the only human that has a brain how do i know that everyone is not just like a robot or something? umm.... yeah sorry i didnt really help, but i dont know

Answer 6

In humans, rods and cones in the eye allow us to see in color. Some animals lack these, which leads to the conclusion that they see only black and white. But until they begin to talk, I guess we will ever REALLY know!

Answer 7

they are only green/red color blind. and careful examination of a dogs eye