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Porifera & Cnidaria

Total questions: 15

Worksheet time: 10mins

Name
Class
Date
1.

What animals are NOT included in Phylum Cnidaria?

a)

jellyfish

b)

anemones

c)

squids

d)

corals

2.

Sponges have these specialized cells with flagella for pumping water.

a)

tentacles

b)

choanocytes

c)

spicules

d)

amoebacytes

3.

Match the following

a)

1.

Coral polyps

b)

2.

Anemone

c)

3.

Moon jelly

d)

4.

Sponge

e)

5.

Nematocyst

4.

Hard structures unique to each sponge species, some are made of calcium carbonate, others are made of silicon dioxide:

a)

choanocytes

b)

spicules

c)

spiracles

d)

nematocysts

5.

The opening at the top of a sponge where water comes out.

a)

osculum

b)

osteocyte

c)

spicule

d)

cnidocyte

6.

These are known to live in both freshwater and saltwater:

a)

Phylum Porifera

b)

Phylum Cnidaria

7.

The animals in this group are ALL sessile:

a)

Phylum Porifera

b)

Phylum Cnidaria

8.

Animals that remain in one place and are stationary or anchored to the rocks/seafloor:

a)

plankton

b)

motile

c)

sessile

d)

larvae

9.

Larvae of many species of animals begin as this ___________ .

a)

phytoplankton

b)

zooplankton

c)

spicules

d)

choanocytes

10.

Organisms in Phylum Porifera and Phylum Cnidaria both feed on various plankton species.

a)

True

b)

False

11.

A box jellyfish (Class Cubozoa) is in this phylum:

a)

Porifera

b)

Cnidaria

12.

Polyp and medusa are the body forms of this phylum:

a)

Porifera

b)

Cnidaria

13.

Match the following

a)

1.

medusa form

b)

2.

polyp form

c)

3.

plankton

d)

4.

sponge

e)

5.

spicules

14.

These sponge cells have many jobs, one of which is to produce the spicules:

a)

choanocytes

b)

porocytes

c)

nematocyst

d)

amoebocytes

15.

What marine animals are known to eat sponges and jellyfish?

a)

blue whales

b)

sea turtles

c)

leopard seals

d)

sea urchins