Animals, Porifera, Cnidaria

Question 1

Animals are made up of more then one cell and are therefore called

Answer 1

Multicellular

Question 2

Am organism whose mouth forms second during the process of gastrulation

Answer 2

Deuterosomes

Question 3

Body symmetry where the organism can be divided into two right and left halves

Answer 3

Bilateral

Question 4

Hydra, jellyfish, coral and sea anemones are all members of this phylum

Answer 4

Cnidaria

Question 5

Animals with backbones

Answer 5

Vertebrates

Question 6

Pieces of silica which made up the “skeleton” of many sponges

Answer 6

Spicules

Question 7

The top side of an organism

Answer 7

Dorsal

Question 8

What cells in sponges are responsible for moving water currents through the sponge

Answer 8

Collar

Question 9

The gathering of nerve tissue and sensory organs at the anterior end of the body

Answer 9

Cephalization

Question 10

The “rear” end of an organism

Answer 10

Posterior

Question 11

A hollow ball of cells formed after a zygote undergoes several rounds of cell division

Answer 11

Blastula

Question 12

This stage of the sponge life cycle is the only one which is motile

Answer 12

Larva

Question 13

The process of eliminating cellular waste

Answer 13

Excretion

Question 14

An organism whose mouth is formed first during gastrulation

Answer 14

Protostomes

Question 15

A word describing organisms which exhibit no define symmetry

Answer 15

Asymmetrical

Question 16

Animals without backbones

Answer 16

Invertebrates

Question 17

Stinging cells founds along the tentacles of Cnidarians

Answer 17

Cnidocytes

Question 18

The inner-most germ layer of a developing embryo

Answer 18

Endoderm

Question 19

Animals cells contain a nucleus and membrane-bound organelles and are therefore called

Answer 19

Eukaryotic

Question 20

The free-swimming, sexually reproducing generation of a cnidarian

Answer 20

Meodusa

Question 21

The type of body symmetry where the organism numerous ways around a central axis

Answer 21

Radial

Question 22

Animals must eat other organisms for energy and therefore described as being

Answer 22

Heterotrophic

Question 23

The flexible protein which makes up the supporting structure of many sponges

Answer 23

Spongin

Question 24

This is the opening through which water leaves the sponge

Answer 24

Osculum

Question 25

Because they don’t move, organisms like adult sponges are described as being

Answer 25

Sessile

Question 26

The name for the jelly-like substance found between the endoderm and ectoderm in Cnidarians

Answer 26

Mesoglca

Question 27

The phylum to to which sponges belong

Answer 27

Porifera

Question 28

The underside of an organism

Answer 28

Ventral

Question 29

A poison filled, stinging dart found in Cnidarians

Answer 29

Nematocyst

Question 30

The ______ cavity in Cnidarians is analogous to the human stomach

Answer 30

Gastrovascular

Question 31

The front end of an organism

Answer 31

Anterior

Question 32

The sessile, asexually reproducing generation of a Cnidarian

Answer 32

Polyp

Question 33

The outmost layer of a developing embryo

Answer 33

Ectoderm

Question 34

A body cavity which forms in many animals organs are often located within the cavity

Answer 34

Cosiom