Invertebrate animal vocabulary

Question 1

Vertebrates

Answer 1

Have a backbone. Less than 5% of all animal species.

Question 2

Invertebrates

Answer 2

Has a backbone. Makes up more than 95% of all animal species.

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 two sides of its body mirror each other. It has equal right and left sides. Most complex animals.

Question 8

Radial Symmetry

Answer 8

The body is organized around the center, like the spokes of a wheel.

Question 9

Asymmetry

Answer 9

Its body is organized around the center. Most simple animals.

Question 10

Sponges

Answer 10

Simple aquatic animals with dense, yet porous, skeletons.

Question 11

Cnidarians

Answer 11

any member of the phylum Cnidaria a group made up of more than 9,000 living species.

Question 12

Flatworms

Answer 12

a group of soft-bodied, usually much flattened invertebrates.

Question 13

Roundworms

Answer 13

parasitic worms that comprise the phylum nematoda.

Question 14

Mollusks

Answer 14

any soft-bodied invertebrate of the phylum Mollusca, usually wholly or partly enclosed in a calcium carbonate shell secreted by a soft mantle covering the body.

Question 15

Open circulatory system

Answer 15

A circulatory system in which the circulatory fluid is not contained entirely within vessels.

Question 16

Closed circulatory system

Answer 16

A circulatory system in which the heart circulates blood through a network of blood vessels that form a closed loop.