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Classification. Respond to the following statements in reference to the five animal phyla listed below.
-This phylum has no tissues or organs.
Controls
Variables that are kept constant or monitored in order to assess the effect of experimental treatments in scientific studies.
Axon
A long, slender projection of a nerve cell that typically conducts electrical impulses away from the neuron's cell body.
Neuron
A nerve cell that is the basic building block of the nervous system, responsible for transmitting information throughout the body through electrical and chemical signals.
Messages
Pieces of communication or information conveyed from one individual to another through various means.
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