Animal Eye Anatomy and Evolution

Which ancient animal is considered the earliest known fossil to possess eyes?

• Sea Urchin

• Octopus

• Spriggina

• Fireworm

What are the two essential components required for an eye to function?

• Lenses and pupils

• Photoreceptors and a nervous system

• Corneas and retinas

• Light and darkness

Which type of eye generally provides a wider field of view but lower visual acuity?

• Camera-type eye

• Telescope eye

• Compound eye

• Eye patch

What is the reflective tissue layer at the back of some animal eyes that helps maximize light capture in low-light environments?

• Retina

• Pupil

• Cornea

• Tapetum Lucidum

What is the approximate range of light wavelengths that humans can see?

• 0.0001 nm to 0.01 nm

• 10 nm to 1000 nm

• 380 nm to 750 nm

• 1 cm to 100 m

Why do animals develop sensitivity to specific light wavelengths?

• To make their eyes look more colorful.

• To help them notice important things like predators or food.

• To allow them to live in underground caves.

• To help them communicate with humans.

How many types of cones do mantis shrimp have in their eyes?

• 3, similar to humans.

• 6, double that of humans.

• At least 12 or more.

• None, they only see in black and white.

What is considered the very first stage in the proposed evolution of an eye?

• A fully formed lens.

• A light-sensitive patch of cells.

• An iris and a pupil.

• A pinhole-shaped eye.