Animal Diversity

Question 1

Multicellular, heterotrophic eukaryotes with tissues that develop from embryonic layers

Answer 1

Animals

Question 2

Nutritional mode of animals

Answer 2

heterotrophs

Question 3

How do animals get nutrients?

Answer 3

Ingest their food

Question 4

Animal cells have______

Answer 4

no cell walls

Question 5

Structural protein that holds up animals bodies

Answer 5

collagen

Question 6

unique to animals

(tissues)

Answer 6

Nervous and muscle tissue

Question 7

How do most animals reproduce?

Answer 7

Sexually

Question 8

Dominant life cycle of animals

Answer 8

Diploid stage

Question 9

Rapid cell division of zygote that occurs after fertilization

Answer 9

cleavage

Question 10

Forms as the result of cleavage

Answer 10

Blastula

Question 11

Stage where gastrula forms

Answer 11

Gastrulation

Question 12

Gastrula is made of different layers of

Answer 12

embryonic tissues

Question 13

Sexually immature and morphologically distinct from the adult

Answer 13

Larva

Question 14

Only animals possess this gene

Answer 14

Hox genes

Question 15

Regulate the development of body form

Answer 15

Hox genes

Question 16

Hox genes provide a wide diversity of

Answer 16

animal morphology

Question 17

May have lived between 675-875 million years ago

Answer 17

common ancestor

Question 18

common ancestor of living animals may. have resembled

Answer 18

choanoflagellates, protists

Question 19

Marks earliest fossil appearance of many major groups of living animals

Answer 19

Cambrian Explosion

Question 20

Possible hypotheses about cause of Cambrian explosion

Answer 20

new predator prey relationships, rise in atmospheric oxygen, evolution of Hox gene complex

Question 21

Animals began making impact on land

Answer 21

Mesozoic Era

Question 22

(Mesozoic era) emerged and became important marine ecological niches

Answer 22

coral reefs

Question 23

These were dominant terrestrial vertebrates in Mesozoic era

Answer 23

dinosaurs

Question 24

First mammals emerged

Answer 24

Mesozoic era

Question 25

Beginning of this era followed mass extinctions of terrestrial and marine animals

Answer 25

Cenozoic era

Question 26

These diversified during Cenozoic

Answer 26

Modern mammal orders and insects

Question 27

Set of morphological and developmental traits used to categorize animals by zoologists

Answer 27

Body plan

Question 28

Group whose members share key biological features

Answer 28

Grade

Question 29

body parts arranged around central axis

Answer 29

radial symmetry

Question 30

Two sided symmetry

Answer 30

Bilateral symmetry

Question 31

The development of a head

Answer 31

Cephalization

Question 32

Three germ layers that give rise to tissues and organs of animal embryo

Answer 32

endoderm, ectoderm, mesoderm

Question 33

the germ layer covering the embryo's surface

Answer 33

ectoderm

Question 34

the innermost germ layer

Answer 34

endoderm

Question 35

endoderm lies this developing digestive tube

Answer 35

archenteron

Question 36

Have ectoderm and endoderm

Answer 36

Diploblastic animals

Question 37

Have ectoderm, endoderm and mesoderm

Answer 37

Triploblastic

Question 38

True body cavity

Answer 38

Coelom

Question 39

Is derived from mesoderm

Answer 39

Coelom

Question 40

Animals that possess a true coelom

Answer 40

coelomates

Question 41

Body cavity derived from the mesoderm and endoderm

Answer 41

Pseudocoelom

Question 42

Triploblastic animals that posess a pseudocoelom

Answer 42

Pseudocoelomates

Question 43

Triploblastic animals that lack a body cavity

Answer 43

Acoelomates

Question 44

Cleavage pattern in protostome development

Answer 44

spiral and determinate

Question 45

Cleavage pattern in deuterostome development

Answer 45

Radial and indeterminate

Question 46

Each cell in the early stages of cleavage retains the capacity to develop into a complete embryo

Answer 46

Indeterminate cleavage

Question 47

Two phylogenetic hypotheses

Answer 47

genetic/molecular camp and morphological/developmental camp

Question 48

All animals share a common

Answer 48

Ancestor

Question 49

Clade of animals with true tissues

Answer 49

Eumetazoa

Question 50

Most animal phyla belong to this clade

Answer 50

Bilateria

Question 51

Two clades of bilaterians

Answer 51

deuterostomes and protostomes

Question 52

Shed their exoskeletons by molting

Answer 52

Ecdysozoans

Question 53

Ecdysis

Answer 53

molting

Question 54

mouth develops before anus

Answer 54

Protostome

Question 55

anus develops before mouth

Answer 55

Deuterostome