Invertebrates

Front 1

Many arthropods have feelers called what?

Back 1

antennae

Front 2

All arthropods have jointed ____________________.

Back 2

feet

Front 3

What two skeleton types do sponges have?

Back 3

spicules and spongin

Front 4

The jaws of many arthropods are called what?

Back 4

mandibles

Front 5

What is the name for a pouch lined with cells that release powerful enzymes?

Back 5

gut

Front 6

The earthworm organ that grinds and digests food from soil is the _______________.

Back 6

gizzard

Front 7

Name the five main groups of arthropods.

Back 7

insects, crustaceans, arachnids, centipedes, and millipedes

Front 8

What kind of symmetry do sponges have?

Back 8

asymmetry

Front 9

Leeches are a type of ____________________worm.

Back 9

annelid

Front 10

What invertebrate group contains gastropods, cephalopods, and bivalves?

Back 10

mollusks

Front 11

What is the name for animals without a backbone?

Back 11

invertebrate

Front 12

All mollusks have a muscular _____________for movement.

Back 12

foot

Front 13

The ___________________protects the body of any mollusk that does not have a shell.

Back 13

mantle

Front 14

What kind of symmetry does an animal have if it has a body with two similar halves?

Back 14

bilateral symmetry

Front 15

Snails and slugs eat with a ribbon-like tongue called a what?

Back 15

radula

Front 16

What is the largest phylum of animals in the world?

Back 16

arthropods

Front 17

What kind of symmetry does an animal have if it has a body with two similar halves?

Back 17

bilateral symmetry

Front 18

What two body shapes might a cnidarian have?

Back 18

medusa and polyp

Front 19

Water enters a sponge through tiny openings called what?

Back 19

pores

Front 20

If a sponge loses part of its body, it might ___________________that lost part.

Back 20

regenerate

Front 21

Complex invertebrates have a space where the gut is located called the what?

Back 21

coelom

Front 22

Annelid worms are best known for their many ________________.

Back 22

segments

Front 23

What kind of cells in a sponge digest food particles directly from the water?

Back 23

collar cells

Front 24

Water flows out of a sponge through a central cavity called a what?

Back 24

osculum

Front 25

All arthropods have an external skeleton called an
_______________________.

Back 25

endoskeleton

Front 26

In some invertebrates, dozens of nerve cells come together in groups called what?

Back 26

ganglia

Front 27

What invertebrate group has stinging cells?

Back 27

cnidarians

Front 28

Nematodes is another name for the group of worms called what?

Back 28

roundworms

Front 29

What structures would you find covering the ventral surface of a seastar?
Hint: They create suction for movement

Back 29

tube feet

Front 30

What is the simplist group of worms? It includes planarians and tapeworms.

Back 30

flatworms

Front 31

The droppings of an earthworm are called _________________.

Back 31

castings

Front 32

What invertebrate group is characterized by having spiny skins?

Back 32

echinoderms

Front 33

What kind of symmetry does an animal have if it has body parts that are arranged around a central point?

Back 33

radial symmetty

Front 34

All arthropods have an external skeleton called an
_______________________.

Back 34

exoskeleton

Front 35

What are the three body sections of insects?

Back 35

head, thorax, abdomen

Front 36

What is the change process in insects in which the adult looks different than the young?

Back 36

complete metamorphosis

Front 37

What are the four stages of complete metamorphosis?

Back 37

egg, larvae, pupa, adult

Front 38

What kind of symmetry do adult seastars have?

Back 38

radial

Front 39

What do echinoderms use in order to move and obtain food?

Back 39

the water vascular system

Front 40

Many tapeworms are _______________________because they live in or on another organism to survive.

Back 40

parasite