invertebrate vocab

Question 1

porifera

Answer 1

sponges, clump of cells that shares a porous skeleton

Question 2

cnidaria

Answer 2

a phylum under kingdom Animalia containing over 11,000 species of aquatic animals found both in freshwater and marine environments, including jellyfish, hydroids, sea anemone, corals and some of the smallest marine parasites

Question 3

annelida

Answer 3

also known as the segmented worms, are a large phylum, with over 22,000 extant species including ragworms, earthworms, and leeches

Question 4

hydra

Answer 4

a genus of small freshwater hydrozoans of the phylum Cnidaria. They are native to the temperate and tropical regions.

Question 5

Jellyfish

Answer 5

the medusa-phase of certain gelatinous members of the subphylum Medusozoa, which is a major part of the phylum Cnidaria.

Question 6

platyhelminthes

Answer 6

These are acoelomates and they include many free-living and parasitic life forms. Members of this phylum range in size from a single-celled organism to around 2-3 feet long.

Question 7

nematoda

Answer 7

They are a diverse animal phylum inhabiting a broad range of environments. Most species are free-living, feeding on microorganisms, but there are many that are parasitic. The parasitic worms are the cause of soil-transmitted helminthiases.

Question 8

pinworms

Answer 8

A parasitic worm. It is a nematode and a common intestinal parasite or helminth, especially in humans.

Question 9

tapeworms

Answer 9

a class of parasitic worms in the flatworm phylum. Most of the species—and the best-known—are those in the subclass Eucestoda; they are ribbon-like worms as adults, known as tapeworms.

Question 10

bivalves

Answer 10

a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts.

Question 11

gastropods

Answer 11

They have a muscular foot, eyes, tentacles and a special rasp-like feeding organ called the radula, which is composed of many tiny teeth.

Question 12

coelomate

Answer 12

organisms with a fluid-filled cavity between the gut wall and the outer body wall. An acoelomate is an organism that does not contain a fluid-filled cavity in their bodies.

Question 13

acoelomate

Answer 13

an invertebrate lacking a coelom

Question 14

radial Symmetry

Answer 14

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

Question 15

asymmetry

Answer 15

not having 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

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

Question 18

medusa

Answer 18

one of two principal body types occurring in members of the invertebrate animal phylum Cnidaria.

Question 19

polyp

Answer 19

A polyp is a projecting growth of tissue from a surface in the body, usually a mucous membrane. Polyps can develop in the: colon and rectum.

Question 20

gizzard

Answer 20

a muscular, thick-walled part of a bird’s stomach for grinding food, typically with grit.

Question 21

crop

Answer 21

a thin-walled, expanded portion of the alimentary tract, which is used for the storage of food before digestion.

Question 22

intestine

Answer 22

the lower part of the alimentary canal from the end of the stomach to the anus.

Question 23

pharynx

Answer 23

the membrane-lined cavity behind the nose and mouth, connecting them to the esophagus.

Question 24

aortic arches

Answer 24

the section of the aorta between the ascending and descending aorta.