Trivia Questions With Answers!

Eye Trivia Quiz Questions

Trivia quiz questions with answers about Eyes

What is an eye?
A: Eyes are organs of the visual system.

Complex eyes can distinguish what?
A: Shapes and colors.

The visual fields of many organisms, especially predators, involve large areas of binocular vision to do what?
A: To improve depth perception.

In other organisms, eyes are located to maximize what?
A: The field of view, such as in rabbits and horses, which have monocular vision.

The first proto eyes evolved among animals how long ago?
A: 600 million years ago.


In most vertebrates and some mollusks, the eye works by allowing light to enter and project onto a what?
A: A light-sensitive layer of cells at the end of the eye, known as the retina.

The cone cells (for color) and the rod cells (for low-light contrasts) in the retina detect and convert light into what?
A: Into neural signals for vision.

The visual signals are then transmitted to the brain via what?
A: The optic nerve.

Such eyes are typically roughly spherical, filled with what?
A: A transparent gel-like substance called the vitreous humor, with a focusing lens and often an iris.

What does the relaxing or tightening of the muscles around the iris do?
A: It changes the size of the pupil, thereby regulating the amount of light that enters the eye.

International Trivia Questions and ...
International Trivia Questions and Answers

The eyes of most cephalopods, fish, amphibians, and snakes have fixed what?
A: Lens shapes, and focusing vision is achieved by telescoping the lens—similar to how a camera focuses.

Compound eyes are found among what?
A: Arthropods.

Compound eyes are composed of what?
A: Many simple facets.

Each sensor has its own lens and what?
A: Photosensitive cell(s).

Some eyes have up to how many such sensors?
A: 28,000.


Compound eyes are very sensitive to what?
A: Motion.

Some arthropods, including many Strepsiptera, have compound eyes of only a few facets, each with what?
A: A retina capable of creating an image, creating vision.

With each eye viewing a different thing, a fused image from all the eyes is produced in the brain, providing very different what?
A: High-resolution images.

Mantis shrimp has been reported to have the world's most complex what?
A: Color vision system.

Trilobites, which are now extinct, had unique what?
A: Compound eyes.


What did they use to form the lenses of their eyes?
A: Clear calcite crystals.

In this, they differ from most other arthropods, which have what?
A: Soft eyes.

In contrast to compound eyes, simple eyes are those that have what?
A: A single lens.

Jumping spiders have a large pair of simple eyes with a narrow field of view, supported by an array of other, smaller eyes for what?
A: Peripheral vision.

Some insect larvae, like caterpillars, have a different type of simple eye (stemmata) which usually provides only a what?
A: A rough image.

In organisms dwelling near deep-sea vents, compound eyes have been secondarily simplified and adapted to see what?
A: The infra-red light produced by the hot vents—in this way the bearers can avoid being boiled alive.

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