The insect organ most equivalent to the human lung in function is the

What does Annelida mean?

A circulatory system that keeps blood confined within vessels after leaving the heart is referred to as:

Arthropoda, especially Insecta, have a highly developed nervous system. This is even more evident by the fact that they have this type of receptor that can sense pain.

Identify “M.” 

What does Arthropoda mean?

Match the Phylum with the correct characteristic

Mollusks are characterized by

Cnidarians may be described as

Which of the following animals would be considered a pseudocoelemate?