Chapter 44: Animal Diversity

Front 1

Phylum

Back 1

-

Front 2

Poriferans

Back 2

Phylum made up of sponges

Front 3

Cnidarians

Back 3

Phylum that contains jellyfish and sea anemones

Front 4

Radial Symmetry

Back 4

Means that bodies have an axis that runs from the mouth to base with many planes of symmetry through this axis

Front 5

Bilateral Symmetry

Back 5

Bodies have a distinct head and tail, marking front and back, with a single plane of symmetry running between them at the midline

Front 6

Bilateria

Back 6

The branch of the animal tree which_______ animals with bilateral symmetry

Front 7

Acoelomates

Back 7

Lacking a body cavity

Front 8

Coelomates

Back 8

Having a body cavity

Front 9

Pseudocoelomate

Back 9

Having a body cavity that does not completely surround the internal organs

Front 10

Two groups of Bilaterian animals

Back 10

Protostomes and Deuterostomes

Front 11

Protostomes

Back 11

(First mouth) The first opening to the internal cavity of the developing embryo, called the blastopore, becomes the mouth

Front 12

Deuterostomes

Back 12

(Second Mouth) In this bilateral group, the blastopore becomes the anus.

Front 13

Two subgroups of protostomes

Back 13

Lophotrocozoans and Ecdysozoans

Front 14

Lophotrocozoans

Back 14

-

Front 15

Ecdysozoans

Back 15

-

Front 16

Choanocytes

Back 16

-q

Front 17

Mesohyl

Back 17

A gelatinous mass that lies between the interior and exterior cell layers...

Front 18

Eumetazoa

Back 18

-

Front 19

Gastric Cavity

Back 19

The mouth and medusa and polyp open into this and it is the site of extracellular digestion and excretion

Front 20

Epidermis

Back 20

The outer layer of the diploblastic (two germ layers) which develops them the ectoderm

Front 21

Endodermis

Back 21

(the inner lining) of the diploblastic ______ which derives from the endoderm

Front 22

Mesoglea

Back 22

A Gelatinous mass _____

Front 23

Ctenophores

Back 23

(comb jellies) Resemble cnidarians in body plan_____

Front 24

Placozoans

Back 24

Considered to be the simplest of animals_____

Front 25

Annelid Worms and Mollusks

Back 25

-

Front 26

Gastropods

Back 26

Snails and Slugs

Front 27

Cephalopods

Back 27

The second great class of mollusks, with about 700 species. Includes squid, cuttlefish and octopuses

Front 28

Bivalves

Back 28

Third major group of mollusks, which includes clams, oysters, mussels, ____

Front 29

Arthropoda

Back 29

-

Front 30

Chitin

Back 30

-

Front 31

The four main groups of arthropods

Back 31

Insects, Chelicerates, Myriapods, and Crustaceans

Front 32

Examples of Chelicerates

Back 32

Spiders, Scorpions and their relatives

Front 33

Examples of Myriapods

Back 33

Centipedes and millipedes

Front 34

Examples of Crustaceans

Back 34

Lobsters, Shrimps, Crabs and their relatives

Front 35

Metamorphoses

Back 35

A major change in from from one developmental stage to another

Front 36

Pupa

Back 36

A wormlike larva specialized for feeding

Front 37

Spiracles

Back 37

Small pores in the exoskeleton of insects

Front 38

Trachea

Back 38

The internal system of tubes to which the spiracles are connected to

Front 39

Three major phyla of Deuterostomia

Back 39

Chordata
Hermichordata
Echinodermata

Front 40

What does Chordata consist of?

Back 40

Vertebrates and closely related invertebrates (i.e. sea squirts)

Front 41

What does Hermichordata consist of?

Back 41

Acorn worms

Front 42

What does Echinodermata consist of?

Back 42

Sea urchins and see stars

Front 43

Pharynx

Back 43

a tube that connects the -----

Front 44

Pharyngeal Slits

Back 44

Vertical opening in_____

Front 45

Dorsal never cord

Back 45

-

Front 46

Water Vascular System

Back 46

A series of fluid filled canals that permits bulk transport of oxygen and nutrients

Front 47

Tube Feet

Back 47

Small projections of the water vascular system that extend outward from the body surface, facilitate locomotion, sensory perception, food capture, and gas exchange.

Front 48

Notochord

Back 48

A stiff rod of collagen and other proteins that runs along the back, providing support for the axis in some chordates