Simple Invertebrate

Question 1

A phylum of aquatic invertebrate animals that comprises the sponges

Answer 1

Porifera

Question 2

Cnidaria is a phylum containing over 10,000 species of animals found exclusively in aquatic environments: they are predominantly marine species. Their distinguishing feature is cnidocytes, specialized cells that they use mainly for capturing prey

Answer 2

Cnidaria

Question 3

The annelids, also known as the ringed worms or segmented worms, are a large phylum, with over 17,000 extant species including ragworms, earthworms, and leeches

Answer 3

Annelida

Question 4

noting or pertaining to that form of hydrozoan that is asexual and grows into branching colonies by budding

Answer 4

Hydroid

Question 5

Jellyfish or jellies are softbodied, free-swimming aquatic animals with a gelatinous umbrella-shaped bell and trailing tentacles. The bell can pulsate to acquire propulsion and locomotion

Answer 5

Jellyfish

Question 6

The flatworms, flat worms, Platyhelminthes, Plathelminthes, or platyhelminths are a phylum of relatively simple bilaterian, unsegmented, soft-bodied invertebrates

Answer 6

Platyhelminthes

Question 7

The nematodes or roundworms constitute the phylum Nematoda. They are a diverse animal phylum inhabiting a broad range of environments

Answer 7

Nematoda

Question 8

Ascaris lumbricoides is the “large roundworm” of humans, growing to a length of up to 35 cm. It is one of several species of Ascaris. An ascarid nematode of the phylum Nematoda, it is the most common parasitic worm in humans

Answer 8

Pinworms

Question 9

Cestoda is a class of parasitic worms of the flatworm phylum. They are informally referred to as cestodes. The best-known species are commonly called tapeworms

Answer 9

Tapeworms

Question 10

Bivalvia, in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts

Answer 10

Bivalves

Question 11

The Gastropoda or gastropods, more commonly known as snails and slugs, are a large taxonomic class within the phylum Mollusca

Answer 11

Gastropods

Question 12

have a body cavity called a coelom with a complete lining called peritoneum derived from mesoderm (one of the three primary tissue layers).

Answer 12

Coelomate

Question 13

an invertebrate lacking a coelom

Answer 13

Acoelomate

Question 14

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

Answer 14

Radial Symmetry

Question 15

The lack or absence of symmetry

Answer 15

Asymmetry

Question 16

arrangement of an organism or part of an organism along a central axis

Answer 16

Bilateral Symmetry

Question 17

A narrow, flexible, unjointed part extending from the body of certain animals

Answer 17

Tentacle

Question 18

an explosive cell containing one giant secretory organelle or cnida

Answer 18

Cnidocyte

Question 19

one of the three primary germ layers in the very early embryo

Answer 19

Ectoderm

Question 20

The innermost of the primary germ layers of an animal embryo

Answer 20

Endoderm

Question 21

the female gonad or reproductive gland

Answer 21

Ovary

Question 22

The male gonad or reproductive glands

Answer 22

Teste