invertebrate animal vocab

Question 1

Vertebrates

Answer 1

an animal that has a backbone.

Question 2

invertebrates

Answer 2

an animal that does not have a backbone.

Question 3

consumer

Answer 3

an organism that eats other organisms or organic matter

Question 4

ganglion

Answer 4

a mass of nerve cells

Question 5

gut

Answer 5

the digestive tract

Question 6

coelom

Answer 6

a body cavity that contains the internal organs.

Question 7

Bilateral Symmetry

Answer 7

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

Question 8

Radial Symmetry

Answer 8

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

Question 9

Asymmetry

Answer 9

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

Question 10

Sponges

Answer 10

Sponges, the members of the phylum Porifera, are a basal Metazoa clade as a sister of the Diploblasts.

Question 11

Cnidarians

Answer 11

Cnidaria is a phylum under kingdom Animalia containing over 11,000 species of aquatic animals found both in freshwater and marine environments, predominantly the latter.

Question 12

Flatworms

Answer 12

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

Question 13

Roundworms

Answer 13

The nematodes or roundworms constitute the phylum Nematoda, with plant-parasitic nematodes being known as eelworms. They are a diverse animal phylum inhabiting a broad range of environments.

Question 14

Mollusks

Answer 14

Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda.

Question 15

Open circulatory system

Answer 15

the blood is not enclosed in the blood vessels, but is pumped into a cavity called a hemocoel.

Question 16

Closed circulatory system

Answer 16

Have the blood closed at all times within vessels of different size and wall thickness.

Question 17

Annelid worms

Answer 17

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

Question 18

Exoskeleton

Answer 18

hard coatings on the outside of some animals, mostly arthropods.

Question 19

Compound eye

Answer 19

an eye consisting of an array of numerous small visual units, as found in insects and crustaceans.

Question 20

Antenna

Answer 20

either of a pair of long, thin sensory appendages on the heads of insects, crustaceans, and some other arthropods.

Question 21

Metamorphosis

Answer 21

in an insect or amphibian) the process of transformation from an immature form to an adult form in two or more distinct stages.

Question 22

Endoskeleton

Answer 22

an internal skeleton, such as the bony or cartilaginous skeleton of vertebrates.

Question 23

Water vascular system

Answer 23

(in an echinoderm) a network of water vessels in the body, the tube feet being operated by hydraulic pressure within the vessels.