Classification

Question 1

An invertebrate with a soft, unsegmented body; most are protected by a hard outer shell.

Answer 1

Mollusk

Question 2

A radially symmetrical marine invertebrate that has an internal skeleton and a system of fluidfilled tubes.

Answer 2

Echinoderm

Question 3

An internal skeleton; structural support system within the body of an animal.

Answer 3

Endoskeleton

Question 4

External skeleton; a tough, waterproof outer covering that protects, supports, and helps prevent evaporation of water from the body of many invertebrates.

Answer 4

Exoskeleton

Question 5

An invertebrate that has an external skeleton, a segmented body, and jointed appendages.

Answer 5

Arthopod

Question 6

A radially symmetrical invertebrate that uses stinging cells to capture food and defend itself.

Answer 6

Cnidarian

Question 7

The process of grouping things based on their similarities.

Answer 7

Classification

Question 8

The scientific study of how living things are classified.

Answer 8

Taxonomy

Question 9

The classification system in which each organism is given a unique, two-part scientific name indicating its genus and species.

Answer 9

Binomial nomenclature

Question 10

A classification grouping that consists of a number of similar, closely related species.

Answer 10

Genus

Question 11

A group of similar organisms that can mate with each other and produce offspring that can also mate and reproduce.

Answer 11

Species