This is the direction is the image produced by the compound eye (up or down).
What is right side up
100
This is why a camera eye called a camera eye?
What is because it functions like a camera.
100
This part of a butterfly's body is used as its eye.
What is its genitals.
100
This is the eye shape that allows for eyes to perceive direction.
What is cup shape.
200
This is the minimum number of times eyes have been independently evoloved.
What is 40.
200
This is the main difference between apposition and superposition compound eyes.
What is apposition isolates light supply while superposition does not.
200
This is what a camera eye is.
What is an eye that uses a lense to direct light onto the retina.
200
This is the type of eye in which ommatidia are found in.
What is a compound eye.
200
This is the trade-off caused by the pinhole eye.
What is that you can either have a sharp and dark image or a blurry and bright image.
300
Emma Darwin referred to the evolution of the eye as this.
What is "a great assumption."
300
This prevents the compound eye from seeing as clearly as we do.
What is a diffraction limit, which limits how small ommatidia can be.
300
This is how the camera eye improves upon the pinhole eye.
What is it adds a lens.
300
This is the function of a photocell.
What is to capture photons on different layers of pigments, the more pigments the better the image.
300
This is what going up an eye's "Mount Improbable" entails.
What is mutating small steps at a time, only accepting mutations that improve optical performane.
400
This is a way to improve a cup eye's ability to detect direction.
What is increase cup depth.
400
This is how the ommatidia are isolated from each other in the apposition compound eye.
What is a dark pigmented sheath around each tube.
400
Besides the lense, this is a good mechanism to correct problems of the pinhole eye.
What is a curved mirror.
400
This is function of the tapetum.
What is to reflect photons that a photocell did not capture back to the same photocell, thus not distorting the image.
400
These animals have tapeta.
What is mammals, especially noctural ones, and invertebrates.
500
This is the number of steps that the Nilsson and Pelger's experiment found to evolve an eye from nothing if each step achieved a 1% change in the magnitude of something.
What is 1829.
500
This is the main purpose of each ommatidium.
What is to report how much light comes down its tube to the retina.
500
This is the refractive index of lens.
What is a measure of the lens' power to bend rays of light.
500
This is the function of the retina.
What is to sense light, which triggers nerve impulses, and creates an image in the brain.
500
This is an ectopic eye.
What is an eye that is properly formed and functions on parts of the body where eyes do not commonly exist.