Evolution and Function of Eyes

What is a common misconception about how animals see the world?

• Animals see the world exactly like humans.

• Animals have no vision at all.

• Animals see only in black and white.

• Animals can see through walls.

Why is it difficult to understand what animals actually see?

• Because animals do not have eyes.

• Because animals do not respond to light.

• Because animal brains process visual information differently from human brains.

• Because animals do not have brains.

What is the primary function of the simplest eyes?

• To detect light and dark.

• To see in color.

• To focus on distant objects.

• To detect movement.

What additional capability do human eyes have compared to the simplest eyes?

• Detecting light and dark.

• Seeing in color and spatial detail.

• Seeing in the dark.

• Detecting infrared light.

At which stage of eye development do organisms start to detect the direction of light?

• Stage three

• Stage two

• Stage one

• Stage four

What is a characteristic of stage three eyes?

• They can only detect light and dark.

• They can produce crude images of objects.

• They can see in color.

• They have lenses and corneas.

What is the most advanced stage of eye development?

• Stage one

• Stage two

• Stage four

• Stage three

How long could the evolution from simple to complex eyes theoretically take?

• Less than a million years

• Less than half a million years

• Less than a hundred thousand years

• Less than ten thousand years

Which animal's vision does the narrator express a desire to understand?

• Dog

• Mantis shrimp

• Cat

• Eagle

What is unique about mantis shrimp vision?

• They see in black and white.

• They can see through objects.

• They have multiple eyes that see the same thing from different points of view.

• They are blind.