Simple Invertebrates

Question 1

aquatic invertebrate animals that comprises the sponges

Answer 1

Porifera

Question 2

an aquatic invertebrate animal of the phylum Cnidaria, which comprises the coelenterates.

Answer 2

Cnidaria

Question 3

also known as the ringed worms or segmented worms

Answer 3

Annelids

Question 4

a coelenterate of an order that includes the hydras. They are distinguished by the dominance of the polyp phase.

Answer 4

Hydroid

Question 5

a free-swimming marine coelenterate with a jellylike bell- or saucer-shaped body that is typically transparent and has stinging tentacles around the edge

Answer 5

Jellyfish

Question 6

The flatworms

Answer 6

Platyhelminthes

Question 7

A large phylum of worms with slender, unsegmented, cylindrical bodies, including the roundworms, threadworms, and eelworms

Answer 7

Nematoda

Question 8

a small nematode worm that is an internal parasite of vertebrates

Answer 8

Pinworms

Question 9

a parasitic flatworm, the adult of which lives in the intestine of humans and other vertebrates. It has a long ribbonlike body with many segments that can become independent, and a small head bearing hooks and suckers.

Answer 9

Tapeworms

Question 10

an aquatic mollusk that has a compressed body enclosed within a hinged shell, such as oysters, clams, mussels, and scallops

Answer 10

Bivalves

Question 11

snail, slug, or whelk.

Answer 11

Gastropods

Question 12

have a body cavity

Answer 12

Coelomate

Question 13

no body cavity

Answer 13

Acoelomate

Question 14

symmetry around a central axis

Answer 14

radial symmetry

Question 15

lack of equality or equivalence between parts or aspects of something

Answer 15

Asymmetry

Question 16

symmetry down the center

Answer 16

bilateral symmetry

Question 17

a slender flexible limb or appendage in an animal, especially around the mouth of an invertebrate, used for grasping, moving about, or bearing sense organs

Answer 17

Tentacle

Question 18

s an explosive cell containing one giant secretory organelle or cnida

Answer 18

Cnidocyte

Question 19

the outermost layer of cells or tissue of an embryo in early development

Answer 19

ectoderm

Question 20

the innermost layer of cells or tissue of an embryo in early development, or the parts derived from this, which include the lining of the gut and associated structures.

Answer 20

endoderm

Question 21

a female reproductive organ in which ova or eggs are produced

Answer 21

Ovary

Question 22

Male reproductive organs.

Answer 22

teste