Porifera-Sponge

Question 1

Budding

Answer 1

Asexual reproduction in which a part of the parent organism pinches off and forms a new organism.

Question 2

Collar cell

Answer 2

Holds the flagella to create a current of water through the sponge.

Question 3

Filter feeder

Answer 3

Organism that filters food out of the water

Question 4

Flagella

Answer 4

long whip-like structure that moves water

Question 5

Gametes

Answer 5

Male and female reproductive cells

Question 6

Hermaphrodite

Answer 6

Organism that has both male and female reproductive cells

Question 7

Holdfast

Answer 7

Attaches the sponge to the ground

Question 8

Osculum

Answer 8

An opening in a sponge’s body through which water exits

Question 9

Sessile

Answer 9

An organism that does not move. It remains attached to one place.

Question 10

Spawning

Answer 10

The release of male or female gametes into the water

Question 11

Spicules

Answer 11

Tiny needle like structures made of glass or spongin that give the sponge support

Question 12

Spongin

Answer 12

Flexible protein material that make up the skeleton of the sponges.

Question 13

What do sponges not have?

Answer 13

Sponges lack true tissues. They don’t have any muscles, nerves, or internal organs.

Question 14

What do moving water currents do for sponges?

Answer 14

Moving water currents carry food and oxygen to sponges and take away the sponges’ waste products.

Question 15

Can sponges make their own food?

Answer 15

No

Question 16

Do adult sponges stay in one place?

Answer 16

Yes

Question 17

What are the steps that water takes when it enters the sponge?

Answer 17

1) The water enters the small pores throughout the sponge’s body.
2) The water flows into a central cavity.
3) Water leaves the sponge through the osculum (a large opening)

Question 18

What do collar cells have and do?

Answer 18

Collar cells have whiplike structures that beat back and forth to move water through the sponge. Collar cells strain food from the water.

Question 19

What are the soft bodies of sponges supported by?

Answer 19

A network of spikes

Question 20

How do sponges feed?

Answer 20

Sponges feed by straining food particles from water.

Question 21

Diffusion

Answer 21

When molecules of a substance move from an area in which they are highly concentrated to an area in which they are less concentrated.

Question 22

Why are sponges animals?

Answer 22

They must take in food and they are multicellular.