Ch 21b

Question 1

what are the 8 invertebrate phyla?

Answer 1

1. porifera
   2.cnideria
2. Platyhelminthes
3. nematode
4. mollusca
5. annelida
6. arthropoda
7. echinodermata

Question 2

Phylum porifera

Answer 2

sponges

Question 3

Phylum porifera symmetry

Answer 3

radial or assymetrical

Question 4

do porifera have flagellated larvae?

Answer 4

yes

Question 5

Phylum Cnidaria

Answer 5

Jelly fish, hydra, sea anemone, coral, portuguese man of war

Question 6

4 importances of porifera

Answer 6

1. few animals eat or attack
2. many arthropods, mollusks, worms, or fish inhabit
3. attach to shellfish and absorb shell
4. sponge industry in Mediterranean or Gulf

Question 7

amoebocyte

Answer 7

motile cell

Question 8

collar cell

Answer 8

generate water currents and capture food in sponges

Question 9

osculum

Answer 9

excretory structure in sponges

Question 10

spicules

Answer 10

structural elements found in sponges

Question 11

epidermis

Answer 11

outermost layer in sponges, cnidaria

Question 12

how can sponges reproduce?

Answer 12

budding

Question 13

Cnidaria symmetry

Answer 13

radial

Question 14

Body makeup of cnidaria

Answer 14

true tissues, simple organs, no systems

Question 15

Cnidarian are mostly

Answer 15

motile

Question 16

How do cnidaria digest?

Answer 16

sac-like

Question 17

Sessile

Answer 17

immobile

Question 18

Polyp

Answer 18

a sessile cnidarian where a stalk holds the tentacles upward

Question 19

Medusa

Answer 19

free-swimming where the tentacles dangle down

Question 20

cnidocytes

Answer 20

stinging cells in cnidaria

Question 21

nematocysts

Answer 21

stinging organelles in cnidaria

Question 22

gastrodermis

Answer 22

the inner layer of cells in cnidarians that lines the gastrovascular cavity and is involved in digestion and absorption

Question 23

mesoglea

Answer 23

hydrostatic skeleton that gives structure to cnidaria

Question 24

Phylum Platyhelminthes

Answer 24

flatworms: tapeworms, flukes planarians

Question 25

are Platyhelminthes free-living or parasitic

Answer 25

both

Question 26

Platyhelminthes digestive and nervous system

Answer 26

incomplete digestive system, simple nervous system

Question 27

Platyhelminthes are hermaphrodites which means they:

Answer 27

produces both sperm and egg cells

Question 28

What type of symmetry do Platyhelminthes have?

Answer 28

Bilateral

Question 29

Are Platyhelminthes protostomes or deuterostomes?

Answer 29

protostomes

Question 30

pharynx

Answer 30

a feeding tube in platyhelminthes that take in and break down food

Question 31

scolex

Answer 31

head of a tapeworm that attaches to the host

Question 32

proglottid

Answer 32

body segments in platyhelminthes that allow it to reproduce

Question 33

Where does the blood fluke reproduce?

Answer 33

The human intestine

Question 34

Phylum Mollusca

Answer 34

bivalves, snails, slugs, squid, octopus

Question 35

are mollusca protostomes or deuterstomes

Answer 35

protostomes

Question 36

where do mollusca live

Answer 36

mostly marine, some terrestrial

Question 37

What 3 organs do all mollusca have?

Answer 37

Visceral mass, foot, mantle

Question 38

what type of digestive system do mollusca have?

Answer 38

complete

Question 39

what type of symmetry do mollusca have?

Answer 39

bilateral or nonsymmetrical

Question 40

The largest invertebrate is a mollusca: what is it?

Answer 40

Giant Squid

Question 41

Mollusca body type

Answer 41

soft and unsegmented

Question 42

3 types of gastropods

Answer 42

Nudibranchs, terrestrial snail, deer cowrie

Question 43

What is the animal group with the largest number of extinctions?

Answer 43

Gastropods

Question 44

Most threatened groups of mollusks

Answer 44

freshwater bivalves (including pearl muscles) and terrestrial gastropods (including pacific island snails)

Question 45

Phylum Nematoda

Answer 45

Roundworms: hook worms, pinworms, trichinella, elephantiasis, intestinal roundworms

Question 46

Nematoda body segmentation

Answer 46

nonsegmented

Question 47

Nematoda coelom or pseudocoelom

Answer 47

pseudocoelom

Question 48

Nematoda protostome or deuterostome

Answer 48

protostome

Question 49

Nematoda digestive system

Answer 49

complete

Question 50

Nematoda symmetry

Answer 50

bilateral

Question 51

Phylum Annelida

Answer 51

Earthworms, marine worms, leeches

Question 52

Annelida segmentation

Answer 52

segmented

Question 53

Annelida protostome or deuterostome

Answer 53

protostome

Question 54

Annelida coelom or pseudocoelom

Answer 54

coelom

Question 55

Where do annelida inhabit

Answer 55

freshwater, marine, or terrestrial

Question 56

Annelida Digestive System

Answer 56

complete

Question 57

Annelida symmetry

Answer 57

bilateral

Question 58

Systems of annelida

Answer 58

circular and nervous

Question 59

Setae

Answer 59

bristles that help annelids move and burrow

Question 60

Parapodia

Answer 60

in annelids that help with motion, excretion and respiration

Question 61

Phylum Arthropoda

Answer 61

Insects, crustaceans, spiders, centipedes, millipedes and mites

Question 62

What kind of development do Arthropoda undergo?

Answer 62

Protostome

Question 63

Where do arhtropoda inhabit?

Answer 63

marine, freshwater and terrestrial

Question 64

What is the largest phyla and what is the percentage of species it contains?

Answer 64

Arthropoda, 70-75%

Question 65

Arthropda key features

Answer 65

exoskeleton, segemented, complete and complex systems

Question 66

What type of symmetry do arthropods have?

Answer 66

Bilateral

Question 67

Metamorphosis

Answer 67

larva such as a caterpillar or maggot changes to an adult

Question 68

Entomology

Answer 68

study of insects

Question 69

Gregarious