Platyhelminthes have a nervous system best described as

A mollusk that has arms connecting directly to the head of the animal is a:

In which way are protostomes and deuterostomes the same?

Most animal species are in which phylum?

What does Annelida mean?

Identify the mammalian order represented by “A.”

Which of the following animals would be considered a pseudocoelemate?

A sponge acquires nutrients by

This animal shows which type of symmetry? 

Identify “J.”