Chapter 15: Section 4 Question Preview (ID: 2099)


Invertebrates: Echinoderms. TEACHERS: click here for quick copy question ID numbers.

Echinoderms live ___.
a) on land
b) in fresh water
c) in salt water
d) all of the answers

Echinoderm means ___.
a) jointed limbs
b) spiny skinned
c) endoskeleton
d) shiny tube foot

Echoinderm larvae have ___.
a) radial symmetry
b) bilateral symmetry
c) no symmetry
d) radial and bilateral symmetry

Echinoderms contain a (n) ___ similar to the kind that vertebrates have.
a) endoskeleton
b) exoskeleton
c) segmented body
d) brain

An ampulla regulates ___.
a) blood pressure in a closed circulatory system
b) water pressure in a tube foot
c) blood pressure in a open circulatory system
d) none of the answers

The plate on the top of a sea star through which water enters the vascular system is called the ___.
a) tube feet
b) nerve ring
c) sieve plate
d) radial nerve

The tiny suckers on a sea star's arms that help it to move and capture food are called ___.
a) tube feet
b) nerve ring
c) sieve plate
d) radial nerve

Around the mouth of a sea star is a circle of nerve fibers called a ___.
a) tube feet
b) nerve ring
c) sieve plate
d) radial nerve

In sea stars, a ___ runs form the nerve ring to the tip of each arm.
a) tube feet
b) nerve ring
c) sieve plate
d) radial nerve

Name the four major groups of echinoderms.
a) sea stars, brittle stars, sand dollars, sea cucumber
b) jelly fish, hydras, sea anemones, corals
c) clams, squids, snails, slulgs
d) centipedes, arachnids, crustaceans, insects.

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