Chapter 15: Section 1: Question Preview (ID: 1985)

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Invertebrates make up what percentage of all animals?
a) 4%
b) 50%
c) 85%
d) 97%

Which of the following describes the body plan of a sponge?
a) radial symmetry
b) bilateral symmetry
c) asymmetry
d) partial symmetry

What cells do sponges have that no other animal has?
a) blood cells
b) nerve cells
c) collar cells
d) none of the answers

The organs of more-comples invertebrates such as the earthworm contain in a body cavity called the ___.
a) gut
b) coelum
c) abdominal hollow
d) collar cells

Digestion of food particles in a sponge takes place in its ___.
a) gut
b) ampulla
c) osculum
d) collar cells

Bath sponges have a skeleton made of a special protein called ___.
a) osculum
b) spongin
c) silicate
d) calcium carbonate

Sponges belong to the phylum ___.
a) Porifera
b) Chordata
c) Cnidaria
d) Mollusca

Trichinella spiralis, the worm that causes trichonosis, is a ___.
a) planarian
b) round worm
c) fluke
d) tapeworm

The body parts of some inveretebrates are contolled by indiviual groupings of nerve cells called ___.
a) ganglia
b) coeloms
c) osculum
d) spicules

The body parts of a jellyfish is the ___, which looks like a ball with tentacles hanging underneath.
a) polyp
b) ganglia
c) medusa
d) coeloms

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