Biology 2 Quiz 26-1

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The upper, or backside of an organism is its

Unlike plant cells, animal cells do not have

Which of the three cell layers in animal embryos gives rise to muscles and much of the circulatory, reproductive, and excretory systems?

A parasite is a type of

Worms and insects are both vertebrates.

An animal that has distinct left and right sides shows

The fundamental characteristics that distinguish animals from plants are

Only five percent of all animals have