Sponge Test

Question 1

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

Answer 1

Choanocytes

Question 2

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

Answer 2

Commensalistic

Question 3

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

Answer 3

Myocytes (porocytes)

Question 4

What cells are found in sponges?

Answer 4

Myocytes (porocytes), archaeocytes (amebocytes), choanocytes

Question 5

Digestion in a sponge occurs

Answer 5

Intracellularly in food vacuoles

Question 6

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

Answer 6

Archaeocytes (amebocytes)

Question 7

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

Answer 7

Spongocoel

Question 8

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

Answer 8

Gemmules

Question 9

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

Answer 9

Skeletal structures or spicules

Question 10

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

Answer 10

Dermal ostia

Question 11

Most common reproductive method employed by sponges?

Answer 11

Asexual budding

Question 12

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

Answer 12

Calcarea (calcispongiae)

Question 13

Body system sponges don’t have?

Answer 13

Nervous

Question 14

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

Answer 14

Skeletal structures or spicules

Question 15

What’s the term which means “to have both sexes in one body?”

Answer 15

Monoecious (hermaphroditic)

Question 16

Sponges feed on which of the following?

Answer 16

Plankton, detritus and bacteria

Question 17

Bath sponges are found in which class?

Answer 17

Demospongiae

Question 18

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

Answer 18

Archaeocytes

Question 19

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

Answer 19

Leuconoid

Question 20

The loggerhead sponge is located in which class of sponges?

Answer 20

Demospongiae

Question 21

The Venus flower basket is a member of which class?

Answer 21

Haxactinellida

Question 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

Answer 22

Mesohyl

Question 23

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

Answer 23

Boring sponge

Question 24

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

Answer 24

Food
Gas exchange
Sexual reproduction

Question 25

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

Answer 25

Skeletal

Question 26

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

Answer 26

Hexactinellida

Question 27

Sponge sex cells leave the sponge by way of the

Answer 27

Excurrent flow

Question 28

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

Answer 28

Pinacocytes

Question 29

Main type of reproduction in sponges?

Answer 29

Asexual budding

Question 30

Possible uses for sponge toxin?

Answer 30

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

Question 31

What phylum do sponges belong to?

Answer 31

Porifera

Question 32

What type of water do sponges mainly inhabit?

Answer 32

Salt water

Question 33

Are sponges symmetric?

Answer 33

No

Question 34

What are Ostia?

Answer 34

Pores

Question 35

What are the two layers of cells?

Answer 35

Epidermis and gastrodermis

Question 36

Central cavity?

Answer 36

Spongocoel

Question 37

What gives support to the sponge?

Answer 37

Spicules

Question 38

What can spicules be made of?

Answer 38

Spongin Silica Calcium carbonate

Question 39

What do sponges eat?

Answer 39

Detritus Bacteria Plankton

Question 40

Currents of water are created by

Answer 40

Choanocytes

Question 41

Can choanocytes digest food?

Answer 41

Yes but only a little bit

Question 42

The rest of the undigested food is digested by what?

Answer 42

Amebocytes

Question 43

Where does oxygen come in through on the sponge?

Answer 43

Ostia

Question 44

What are the three methods of asexual reproduction?

Answer 44

Budding Fragmentation Gemmules

Question 45

In sponges sexual fertilization is

Answer 45

Internal