5Th Lab Quiz

Front 1

function of pinacocyte

Back 1

flattened cells that collectively make up the outer sponge body wall

Front 2

function of amoebocyte

Back 2

mobile cell that carries food to other sponge cells and has ability to transform in any other cell type

Front 3

function of porocyte

Back 3

doughnut-shaped cell that channels water into the radial canals

Front 4

function of choanocyte

Back 4

flagellated cell that lines the interior surface of radial canals and captures food particles for thesponge

Front 5

Water flows into the sponge body through numerous pores on the outer surface called

Back 5

ostia

Front 6

after water flows through ostia, it passes through incurrent canals and then through other smaller openings in specialized cells called ______ into ________ canals that are lined with choanocytes

Back 6

porocytes; radial

Front 7

water is dumped into the large central chamber called the ____________ and then released through the

Back 7

spongocoel; osculum

Front 8

What is the advantage of a folded or convoluted body wall in sponges?

Back 8

It increases surface area for absorptionof nutrients and improved gas exchange.

Front 9

What cell type in sponges is responsible for distributing nutrients to other cells?

Back 9

amoebocytes

Front 10

Why were living sponges placed in Ca2+/Mg2+ free seawater overnight?

Back 10

Living sponges were placed in Ca2+/Mg2+ free seawater overnight toweaken the bonds of intercellular adhesion and permit dissociation of the sponge cells.

Front 11

which layer is thicker in adult cnidarians?

Back 11

gastrodermis is thicker and gastrovascular cavity is usually larger

Front 12

In which tissue layer are the cnidocytes located? Why?

Back 12

in the epidermis because they are used for defense and prey capture so they need to be in the outermost layer

Front 13

explain nematocyst discharge

Back 13

When the small trigger on the cnidocyte is stimulated,an increase in osmotic pressure within the cell causes the nematocyst to violently discharge

Front 14

What type of digestion is Hydra capable of: intracellular, extracellular, or both?

Back 14

both

Front 15

List several ways in which Obelia differs from Aurelia

Back 15

-Obelia is colonial polyp

-Obelia has reproductive polyps

-Obelia is more sessile

Front 16

Compare and contrast the scyphozoan medusa with the medusa bud of Obelia.

Back 16

-both have radial symmetry with tentacles around mouth

-scyphozoans are bigger with smaller tentacles

-hydrozoan medusae lack oral arms

Front 17

What do you suppose is the function or purpose of these folds of the gastrovascular cavity wall (the septa)?

Back 17

support and increasing surface area for improved digestive efficiency

Front 18

Pore that permits circulation of fluid between chambers

Back 18

ostium

Front 19

Extensions around mouth for defense and capture of prey

Back 19

tentacles

Front 20

Thin, vertical wall that divides body and provides increased surface areafor digestion

Back 20

primary septum

Front 21

two similarities between cnidarians and ctenophores.

Back 21

decentralized nerve net, carnivorous predators

Front 22

What characteristics of ctenophores cause zoologists to classify them in a separate phylum from cnidarians?

Back 22

all species lack cnidocytes, possess comb plants used for mobility, have complete digestive system

Front 23

What structures determine whether a polyp of Obelia is a hydranth (feeding polyp) or a gonangium (reproductivepolyp)?

Back 23

hydranths have tentacles, gonangia don't

Front 24

What modification do sea anemones possess that allows food and water to be distributed among the partitionedregions of their bodies?

Back 24

ostia

Front 25

What modification do sea anemones possess to increase their digestive surface area?

Back 25

septa

Front 26

does class anthozoa have a medusa form?

Back 26

no

Front 27

what phylum is a comb jelly?

Back 27

phylum ctenophora

Front 28

what stages does hydrozoa have? (polyp/medusa/both)

Back 28

both

Front 29

what dominant stage does class scyphozoa have?

Back 29

dominant medusa

Front 30

name 1

Back 30

tentacles

Front 31

name 3

Back 31

secondary septum

Front 32

name 2

Back 32

pharynx

Front 33

name the purpose of c

Back 33

defense

Front 34

name 5

Back 34

ostium

Front 35

name 6

Back 35

primary septum

Front 36

name 7

Back 36

pedal disc

Front 37

what are incurrent canals

Back 37

tiny pores scattered along folds of

Front 38

1

Back 38

spongocoel

Front 39

2

Back 39

radial canal

Front 40

3

Back 40

ostium

Front 41

4

Back 41

incurrent canal

Front 42

2

Back 42

choanocyte chamber

Front 43

1

Back 43

spongocoel

Front 44

2

Back 44

radial canal

Front 45

3

Back 45

choanocytes

Front 46

4

Back 46

apopyle

Front 47

type of spicule

Back 47

spongin

Front 48

type of spicule

Back 48

calcium carbonate or spicules

Front 49

A

Back 49

mouth

Front 50

B

Back 50

hypostome

Front 51

D

Back 51

epidermis

Front 52

C

Back 52

gastrovascular cavity

Front 53

E

Back 53

mesoglea

Front 54

F

Back 54

gastrodermis

Front 55

D

Back 55

basal foot

Front 56

C

Back 56

body column

Front 57

B

Back 57

hypostome

Front 58

A

Back 58

tentacles

Front 59

female or male

Back 59

female

Front 60

A

Back 60

medusa buds

Front 61

B

Back 61

hydranth

Front 62

C

Back 62

gonangium

Front 63

D

Back 63

hypostome

Front 64

E

Back 64

coenosarc

Front 65

F

Back 65

perisarc

Front 66

G

Back 66

tentacles

Front 67

function of hypostome

Back 67

regulate size of mouth

Front 68

gonangium function

Back 68

poly specialized for reproduction

Front 69

coenosarc function

Back 69

location of extracellular digestion

Front 70

perisarc function

Back 70

protective function

Front 71

1

Back 71

tentacles

Front 72

2

Back 72

radial canal

Front 73

3,4

Back 73

manubriam

Front 74

function of manubriam

Back 74

supports mouth

Front 75

A

Back 75

mouth

Front 76

B

Back 76

gonad

Front 77

C

Back 77

oral arms

Front 78

D

Back 78

gastric puch

Front 79

F

Back 79

rhopalium

Front 80

E

Back 80

radial canals

Front 81

what are radial canals

Back 81

extensions of gastric pouches that distribute nutrients throughout body

Front 82

pharynx function

Back 82

muscle to pull in food

Front 83

primary septum function

Back 83

supports and increases surface area for digestion

Front 84

acontia function

Back 84

contain cnidocytes

Front 85

class

Back 85

hexactinellida

Front 86

phylum and class

Back 86

cnidaria; anthozoa

Front 87

what phylum are comb jellies

Back 87

ctenophora

Front 88

phylum and class

Back 88

cnidaria, hydrozoa

Front 89

obelia class?

Back 89

hydrozoa

Front 90

phylum + class (not cnidarian or porifera lab)

Back 90

mollusca, polyplacophora

Front 91

phylum and class (not cnidarian or porifera lab)

Back 91

mollusca, gastropoda

Front 92

phylum and class

Back 92

mollusca, bivalvia

Front 93

phylum and class

Back 93

mollusca, gastropoda

Front 94

phylum and class (not cnidarian or porifera lab)

Back 94

mollusca, polyplacophora

Front 95

phylum and class (not cnidarian or porifera lab)

Back 95

mollusca, cephalopoda

Front 96

Back 96

mollusca, cephalopoda

Front 97

phylum and class (not cnidarian or porifera lab)

Back 97

annelida ;polychaeta

Front 98

phylum and class (not cnidarian or porifera lab)

Back 98

annelida, polychaeta

Front 99

phylum/class of leeches

Back 99

annelida; hirudinea

Front 100

phylum class

Back 100

annelida; hirudinea