Mollusks and Echinoderms

Question 1

Which statement accurately describes the exoskeleton?

Revolt · Accepted Answer

It keeps the animal from drying out.

Question 2

Why is it important for the appendages of an arthropod to be jointed?

Revolt · Accepted Answer

The joints make the appendages flexible and allow for movement.

Question 3

To which group of arthropods does this animal belong?

Revolt · Accepted Answer

insects

Question 4

What characteristic do insects, centipedes, and millipedes share? Check all that apply.

Revolt · Accepted Answer

one pair of antennae

Question 5

Which characteristic do insects, crustaceans, centipedes, and millipedes have, but arachnids lack?

Revolt · Accepted Answer

antennae

Question 6

Which arthropod has a long, straw-like mouthpart that helps it suck out the nectar in flowers?

Revolt · Accepted Answer

a butterfly

Question 7

Which functions are aided by swimmerets in crustaceans? Check all that apply.attachment to hostgas exchangeprey capturereproductionswimming

Revolt · Accepted Answer

gas exchange; reproduction; swimming

Question 8

Which function should you expect this arthropod to perform?

Revolt · Accepted Answer

It will squirt smelly liquid on a predator.

Mollusks and Echinoderms Answers