Chapter 32

Question 1

multicellular hetertrophic aquatic or terrestrial eukaryotes

Answer 1

animals

Question 2

animals have ___________________ wall

Answer 2

no cell

Question 3

animals feed by _________________

Answer 3

ingestion

Question 4

________________ is when food is consumed broken down internally using digestive enzymes

Answer 4

ingestion

Question 5

animals live in _____________________

Answer 5

all possible habitats

Question 6

animals reproduce ______________

Answer 6

sexually

-multicellular animare are diploid

Question 7

______________________ represent the only haploid stage in animal life cycle

Answer 7

unicellular gametes

Question 8

gametes are produce by ___________ in the _________________________

Answer 8

meiosis

diploid gonads

Question 9

____________ undergo ____________ to produce the zygote

Answer 9

fertilization

diploid zygote

Question 10

the zygote undergoes ___________________: the mitosis of unicellular zygote forms a hollow ball of cells

Answer 10

cleavage

Question 11

the hollow ball formed by cleavage is the ________________

Answer 11

blastula

Question 12

the hollow center of the blastula is the ________________

Answer 12

blastocoel

Question 13

the blastula undergoes _________________ on end of the blastula folds inward into the blastocoel

Answer 13

gastrulation

Question 14

gastrulation leads to

Answer 14

-an outer layer of cells ectoderm
an inner layer of cells endoderm
a space between the two layers blastocoel
an external opening blastopore into the embryonic gut archenteron

Question 15

the embryonic structure is called the _______________

Answer 15

gastrula

Question 16

the gastrula undergoes further development including __________________________________________ to form the juvenile animal

Answer 16

mesoderm formation and organgenesis

Question 17

the large ultimately undergoes ___________________ forming the adult animal

Answer 17

metamorphiasas

Question 18

_________ posses no true tissues

Answer 18

sponges porifera

Question 19

sponges are simply _____________________

Answer 19

an aggregation of cells

Question 20

cnidarians posses __________________

Answer 20

two tissue layers

Question 21

possessing two tissue layers ectoderm and endoderm

Answer 21

diploblastic

Question 22

all other animals possess _____________________________

Answer 22

three tissue layers

Question 23

posting three tissue layers mesoderm ectoderm endoderm

Answer 23

triploblastic

Question 24

_____________________ do not posses body symmetry and are assymentrical

Answer 24

sponges

Question 25

do not posses body symmetry and are______________

Answer 25

assymentrical

Question 26

cnidarians possess ____________

Answer 26

radial symmetry

Question 27

any plan passing through the center of the body will result in two symmetrical halves

Answer 27

radial symmetry

Question 28

all other animals possess _________________ symmetry

Answer 28

bilateral

Question 29

only one plan passing through the center of the body will result in two symmetrical halfs

Answer 29

bilateral symmetry

Question 30

_____________________ are internal fluid filled spaces possess by triploblastic bilateral animals

Answer 30

body cavities

Question 31

__________________________ are used for nutrient and waste circulation, cushioning of organs and as a hydrostatic skeleton

Answer 31

body cavities

Question 32

__________________ do not possess a body cavity

Answer 32

flatworms

Question 33

termed to not possess a body cavities

Answer 33

acoelmate

Question 34

_________________________ possess a body cavity called a psedocolem

Answer 34

rotifers and nematodes

Question 35

__________________ is a body cavity located between the mesoderm and endoderm

Answer 35

psedocolem

Question 36

all other animals posses a body cavity called a _______________

Answer 36

true coelom

Question 37

a true coelom is a body cavity located located within the

Answer 37

mesoderm

Question 38

the condition when a true coelom is a body cavity located located within the mesoderm

Answer 38

eucocelomate

Question 39

______________________________ animals are further differentiated based on their pattern of embryonic development

Answer 39

triploblastic bilateral animals

Question 40

flatworms rotifers mollusks annelids and nematodes and arthropods are termed protostomes

Answer 40

protostomes

Question 41

echinoderms and chordates are termed

Answer 41

deterostomes

Question 42

In _______________ the bastospore forms the mouth and anus forms secondarily

Answer 42

protostomes

Question 43

In _______________ the bastospore forms the anus and mouth forms secondarily

Answer 43

deterostomes

Question 44

________ spiral and radical

Answer 44

cleavage

Question 45

a helical arrangement of dividing cells

Answer 45

spiral cleavage

Question 46

protostomes undergo

Answer 46

spiral cleavage

Question 47

deterostomes undergo

Answer 47

radical cleavage

Question 48

a stacked arrangement of dividing cells

Answer 48

radical cleavage

Question 49

deterostomes undergo

Answer 49

indeterminate cleavage

Question 50

protostomes

Answer 50

determinate cleavage

Question 51

all early cells have a specific fate. The removal of one cell early in development will result in the death of the embryo mosaic embryos

Answer 51

determinate cleavage

Question 52

early cells have capacity to become any cell type. The removal of one cell early in development will yield two functional embryos

Answer 52

indeterminate cleavage

Question 53

protostomes are

Answer 53

schizocoelus

Question 54

deuterostomes are

Answer 54

enterocoelors

Question 55

the coelom forms for solid masses of mesoderm cells that split apart

Answer 55

protostomes

Question 56

the column forms from an out pocketing of the endoderm and guts

Answer 56

enterocoelors

Question 57

protostomes can be further classified as

Answer 57

lophophorezoans or ecdysozoans

Question 58

a particular type of filter feeding appendage

Answer 58

lophophore

Question 59

a particular type of ciliated marvel stage

Answer 59

trochophore

Question 60

______________ nematodes and arthropods undergo ecdysis

Answer 60

ecdysozoans

Question 61

lophophorezoans are either

Answer 61

lophophore and trochophore

Question 62

molting of an external non living cuticle in order to grow

Answer 62

ecdysis

Question 63

the sponge and cnidarian body plans evolved prior to the

Answer 63

cambrian explosion precambrian

Question 64

all of the other animal body (lophotrochozoans, ecdyzoans, and deuterostomes) plans evolved during the

Answer 64

cambrian explosion 542 mya