Porifera

Front 1

Sponges belong to the phylum ______.

Back 1

Porifera

Front 2

Porifera means ______ in latin.

Back 2

pore-bearer

Front 3

What key property allowed sponges to be classified as animals instead of plants.

Back 3

cell recognition

Front 4

Sponges have ______ symmetry.

Back 4

radial

Front 5

tiny openings or pores through which water enters

Back 5

ostia

Front 6

large openings through which water exits

Back 6

oscula

Front 7

Sponges are ______ because they remain firmly attached to a submerged surface for their entire lifespan.

Back 7

sessile

Front 8

Sponges lack ______ which is present in all other animals.

Back 8

true tissue

Front 9

In terms of ceolum, sponges are ______.

Back 9

aceolomate

Front 10

Why aren't the cell layers of a sponge true tissue?

Back 10

The cell layers are loose federations of cells that are relatively unspecialized.

Front 11

Sponges are called ______ or ______ feeders because they collect food particles from water passed through some sort of food-trapping equiptment.

Back 11

suspension; filter

Front 12

Flexible protein called ______ makes up the skeletal fibers of amoebocytes.

Back 12

spongin

Front 13

specialized cells that move throughout the mesohyl, provide the rest of the sponge's cells with nutrients and carry away waste

Back 13

amoebocytes

Front 14

a layer of flagellated cells linining the internal cavity that trap food particles

Back 14

choanocytes (collar cells)

Front 15

a protist thought to be the ancestor of sponges

Back 15

choanoflagellates

Front 16

Most sponges live in ______ water.

Back 16

marine

Front 17

tiny needles of silica or calcium carbonate that make up the skeletons of most sponges

Back 17

spicules

Front 18

supporting structures are found throughout the ______.

Back 18

mesohyl

Front 19

______ sponges have spicules composed of calcium carbonate.

Back 19

Calcareous

Front 20

______ sponges and ______ have spicules made of silica.

Back 20

glass; demosponges

Front 21

Sponges can reproduce ______ by shedding fragments that develop into new individuals.

Back 21

asexually

Front 22

Sponges can reproduce asexually by ______.

Back 22

budding

Front 23

clusters of ameobocytes encased in protective coats produced by some freshwater sponges when living conditions become harsh

Back 23

gemmules

Front 24

Most sponges are ______ that reproduce sexually because eggs and sperm are produced at different times.

Back 24

hermaphrodites

Front 25

Fertilization occurs in the ______.

Back 25

mesohyl