Which of the Following Phyla Is the Most Diverse and Numerous

question 30

Multiple Choice

Which of the following phyla is the most diverse and numerous of all animal phyla?

• A)The mollusks
• B)The cnidarians
• C)The echinoderms
• D)The arthropods

---

Definitions:

Synapses

The junctions between neurons through which they communicate with each other using chemical or electrical signals.

Axons

Long, slender projections of nerve cells that transmit electrical impulses away from the neuron's cell body to other neurons or muscles.

Dendrites

The branched projections of a neuron that receive electrochemical signals from other neural cells and transmit these signals toward the cell body.

Newborn Sleeps

Refers to the sleep patterns and behaviors of newborns, often characterized by short cycles of sleep and wakefulness throughout a 24-hour period.