invertabrates

Question 1

Porifera

Answer 1

a phylum of aquatic invertebrate animals that comprises the sponges.

Question 2

Cnidaria

Answer 2

a phylum of aquatic invertebrate animals that comprises the coelenterates.

Question 3

Annelida

Answer 3

a large phylum that comprises the segmented worms, which include earthworms, lugworms, and leeches.

Question 4

Hydra

Answer 4

a minute freshwater coelenterate with a tubular body and a ring of tentacles around the mouth.

Question 5

Jellyfish

Answer 5

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

Question 6

Nematoda

Answer 6

a large phylum of worms with slender, unsegmented, cylindrical bodies, including the roundworms, threadworms, and eelworms. They are found abundantly in soil and water, and many are parasites.

Question 6

Platyhelminthes

Answer 6

a phylum of invertebrates that comprises the flatworms.

Question 7

Pinworms

Answer 7

a small nematode worm which is an internal parasite of vertebrates.

Question 8

Gastropods

Answer 8

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

Question 8

Tapeworms

Answer 8

a parasitic flatworm, the adult of which lives in the intestines. It has a long ribbon-like body with many segments that can become independent, and a small head bearing hooks and suckers.

Question 9

Bivalves

Answer 9

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

Question 10

Coelomate

Answer 10

body cavity in which well-developed organs can be accommodated

Question 11

Acoelomate

Answer 11

any animal without a body cavity, such as a flatworm

Question 12

Radial Symmetry

Answer 12

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

Question 13

Asymmetry

Answer 13

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

Question 14

Tentacle

Answer 14

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 15

Bilateral Symmetry

Answer 15

symmetry in which similar anatomical parts are arranged on opposite sides of a median axis so that one and only one plane can divide the individual into essentially identical halves.

Question 16

Medusa

Answer 16

a free-swimming sexual form of a coelenterate such as a jellyfish, typically having an umbrella-shaped body with stinging tentacles around the edge. In some species, medusae are a phase in the life cycle which alternates with a polypoid phase.

Question 17

Polyp

Answer 17

a solitary or colonial sedentary form of a coelenterate such as a sea anemone, typically having a columnar body with the mouth uppermost surrounded by a ring of tentacles. In some species, polyps are a phase in the life cycle which alternates with a medusoid phase.

Question 18

Gizzard

Answer 18

The gizzard, also referred to as the ventriculus, gastric mill, and gigerium, is an organ found in the digestive tract of some animals

Question 19

Crop

Answer 19

a cultivated plant that is grown as food, especially a grain, fruit, or vegetable.

Question 20

Intestine

Answer 20

the lower part of the alimentary canal from the end of the stomach to the anus.
“the contents of the intestine”

Question 21

Pharynx

Answer 21

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

Question 22

Aortic arches

Answer 22

segment of the aorta that helps distribute blood to the head and upper extremities via the brachiocephalic trunk, the left common carotid, and the left subclavian artery.