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Phylum Porifera

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

What phylum is a sea sponge found in?

a)

Phylum Mollusca

b)

Phylum Cnidaria

c)

Phylum Porifera

d)

Phylum Arthropoda

2.

Water enters the sponge through what?

a)

Ostia

b)

Osculum

c)

Amoebocyte

d)

Spicules

3.

Sponges are mostly _________. This means they can produce both male and female reproductive cells.

a)

Homeostasis

b)

Gendered

c)

Hermaphroditic

d)

Hermes

4.

These structures make up the sponge's skeleton. They provide structure and rigidity.

a)

Choanocytes.

b)

Amoebocytes

c)

Spicules

d)

Porocytes

5.

Phylum Porifera is a division of the _________ Kingdom.

a)

Fungi

b)

Animalia

c)

Plantae

d)

Protista

6.

What characteristics let us know that a sponge is an animal?

a)

Cellulose Cell Wall, Autotrophic, Sessile, Multicellular

b)

Chitonous Cell Wall, Heterotroph, Sessile, Mostly Multicellular

c)

No cell wall, Heterotroph, Multicellular

d)

Cell wall or No Cell wall, Heterotroph or Autotroph, Unicellular

7.

How do sponges reproduce?

a)

Only Sexually

b)

Only Asexually

c)

Asexually and Sexually

d)

Only through fragmentation

8.

Tube-like cells which line the pores, ostia, present on the body wall of sponges

a)

Spicules

b)

Porocytes

c)

Amoebocyte

d)

Choanocytes

9.

Phylum Porifera is a phylum of:

a)

Vertebrates

b)

Invertebrates

10.

Can differentiate into any cell and help with digestion

a)

Spicules

b)

Choanocytes

c)

Amoebocytes

d)

Porocytes

11.

Cells that each use a flagellum to create a water current through the sponge. They also have sticky collars to catch food particles for digestion.

a)

Spicules

b)

Porocytes

c)

Choanocytes

d)

Amoebocytes

12.

Porifera means what?

a)

Spongebob

b)

Filter-Feeder

c)

Pore-Bearing

d)

Empty

13.

How do most sponges eat?

a)

Engulfing

b)

Hunting

c)

Photosynthesis

d)

Filter Feeding

14.

Sponges are _______ in their adult forms.

a)

Plankton

b)

Sessile

c)

Nekton

d)

Motile

15.

Sponges are ______ in their larval form.

a)

Sessile

b)

Meroplankton

c)

Holoplankton

d)

Nekton

16.

During sexual reproduction, sperm is released by sponges into the water. Some of it will enter other sponges for __________ ___________ and form a __________.

a)

internal fertilization; zygote

b)

external fertilization; zygote

c)

horizontal fertilization; holoplankton

d)

external fertiliztion; holoplankton

17.

Sponges do not have organs or even true tissues so they are considered the ______ ______ multicellular animals.

a)

most serious

b)

most challenging

c)

most complex

d)

most simple

18.

They can live throughout the oceans from trenches to the arctic to tropical reefs.

a)

True

b)

False

19.

Sponges likely evolved fairly recently. They are one of the last multicellular animals to evolve.

a)

True

b)

False

20.

Sponges can reproduce asexually through what methods?

a)

Locating a mate

b)

Fertilization of egg cells

c)

Budding, Fragmentation, and Gemmules

d)

Fragmentation only