Copepods and krill play an important role in:

This class of Arthropods contains organisms with 4 pairs of “walking legs”:

The Phylum Echinodermata exhibit this type of symmetry as adults:

Squids have a closed circulatory system composed of __________ heart(s).

The largest, most successful class of animals on Earth:

Tick can carry many diseases, including:

The Molluscan class “Gastropoda” includes which of the following organisms?

The term “Arthropoda” means:

This term describes an appendage with two branches; one branch being the gill, the other branch being the leg:

Brittle Stars belong to which class of Echinoderms?