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Flashcards in Sponge Test Deck (45):
1

Cells in the sponge that keep the water circulating, and help gather food and pass it along are called collar cells or

Choanocytes

2

Sponges have what type of symbiotic relationship with juvenile shrimp, crabs, lobster, fish, and other marine organisms?

Commensalistic

3

Which contractile cells help to regulate the flow of water into and out of sponges?

Myocytes (porocytes)

4

What cells are found in sponges?

Myocytes (porocytes), archaeocytes (amebocytes), choanocytes

5

Digestion in a sponge occurs

Intracellularly in food vacuoles

6

Which of the following cells are responsible for producing the skeletal structures of the sponge?

Archaeocytes (amebocytes)

7

The internal cavity or inner chamber of the sponge is called the

Spongocoel

8

These are packets of 3 types of cells that can be produced by the parent sponge during times of climatic stress

Gemmules

9

Collapse of the canals and structure of a sponge is prevented by which of the following?

Skeletal structures or spicules

10

Water enters the sponge through a multitude of these tiny incurrent pores

Dermal ostia

11

Most common reproductive method employed by sponges?

Asexual budding

12

Which class of sponges contain spicules composed of calcium carbonate, which can be straight monoaxons, or 3 or 4 rayed

Calcarea (calcispongiae)

13

Body system sponges don't have?

Nervous

14

The classes of the Porifera phylum are separated based on which of the following?

Skeletal structures or spicules

15

What's the term which means "to have both sexes in one body?"

Monoecious (hermaphroditic)

16

Sponges feed on which of the following?

Plankton, detritus and bacteria

17

Bath sponges are found in which class?

Demospongiae

18

Which of the following cells are called the workhorses of the sponge?

Archaeocytes

19

Which of the following canal systems occurs in a majority of sponges?

Leuconoid

20

The loggerhead sponge is located in which class of sponges?

Demospongiae

21

The Venus flower basket is a member of which class?

Haxactinellida

22

The gelatinous non-living middle layer of connective tissue which acts as a filler between the outer protective cells, and the inner flagellated cells in the sponge

Mesohyl

23

Which of the following sponges attaches to living clams, oysters, and other shelled animals by dissolving the shell and forming a porous network?

Boring sponge

24

Why are sponges dependent on a current of water flowing through their bodies?

Food
Gas exchange
Sexual reproduction

25

What type of body system is the only true system found in sponges?

Skeletal

26

The class of sponges that contain six rayed skeletal structures of silicon

Hexactinellida

27

Sponge sex cells leave the sponge by way of the

Excurrent flow

28

Thin epithelial type cells that cover and protect the exterior and some interior surfaces in sponges

Pinacocytes

29

Main type of reproduction in sponges?

Asexual budding

30

Possible uses for sponge toxin?

To temper the rejection of organ transplant
To slow or stop growth of cancer cells
As an anti inflammatory

31

What phylum do sponges belong to?

Porifera

32

What type of water do sponges mainly inhabit?

Salt water

33

Are sponges symmetric?

No

34

What are Ostia?

Pores

35

What are the two layers of cells?

Epidermis and gastrodermis

36

Central cavity?

Spongocoel

37

What gives support to the sponge?

Spicules

38

What can spicules be made of?

Spongin
Silica
Calcium carbonate

39

What do sponges eat?

Detritus
Bacteria
Plankton

40

Currents of water are created by

Choanocytes

41

Can choanocytes digest food?

Yes but only a little bit

42

The rest of the undigested food is digested by what?

Amebocytes

43

Where does oxygen come in through on the sponge?

Ostia

44

What are the three methods of asexual reproduction?

Budding
Fragmentation
Gemmules

45

In sponges sexual fertilization is

Internal