Simple Invertebrate

Question 1

Proifera

Answer 1

composed of three distinct groups, the Hexactinellida, the Demospongia, and the Calcarea.

Question 2

Cnidarian

Answer 2

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

Question 3

Annelida

Answer 3

a group commonly referred to as segmented worms, and they are found worldwide from the deepest marine sediments to the soils in our city parks and yards

Question 4

Hydroid

Answer 4

a life stage for most animals of the class Hydrozoa, small predators related to jellyfish.

Question 5

Jellyfish

Answer 5

are the informal common names given to the medusa-phase of certain gelatinous members of the subphylum Medusozoa, a major part of the phylum Cnidaria

Question 6

Platyhelminthes

Answer 6

are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates.

Question 7

Nematoda

Answer 7

commonly parasitic on humans include ascarids, filarias, hookworms, pinworms, and whipworms. The species Trichinella spiralis, commonly known as the ‘trichina worm’, occurs in rats, pigs, bears, and humans, and is responsible for the disease trichinosis.

Question 8

Pinworms

Answer 8

small parasites that can live in the colon and rectum

Question 9

Tapeworms

Answer 9

Cestoda is a class of parasitic worms in the flatworm phylum.

Question 10

Bivalves

Answer 10

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

Question 11

Gastropods

Answer 11

a mollusk of the large class Gastropoda, such as a snail, slug, or whelk.

Question 12

Coelomate

Answer 12

have a body cavity called a coelom with a complete lining called peritoneum derived from mesoderm

Question 13

Acoelomate

Answer 13

an invertebrate lacking a coelom especially : one belonging to the group comprising the flatworms and nemerteans and characterized by bilateral symmetry and a digestive cavity that is the only internal cavity.

Question 14

Radial Symmetry

Answer 14

symmetry around a central axis, as in a starfish or a tulip flower.

Question 15

Asymmetry

Answer 15

lack of equality or equivalence between parts or aspects of something; lack of symmetry.

Question 16

Bilateral Symmetry

Answer 16

the property of being divisible into symmetrical halves on either side of a unique plane.

Question 17

Tentacle

Answer 17

Unjointed part of an animal ex. jellyfish

Question 18

Cnidocyte

Answer 18

Explosive cell containing one giant organelle

Question 19

Ectoderm

Answer 19

one of the three primary germ layers

Question 20

Endoderm

Answer 20

inner most part of animal embryo

Question 21

Ovary

Answer 21

female reproductive gland

Question 22

Teste

Answer 22

male reproductive gland