Which Statement Most Accurately Describes the Colonial Flagellate Hypothesis

question 20

Multiple Choice

Which statement most accurately describes the colonial flagellate hypothesis?

• A)Animals are descended from an ancestor that resembles a spherical colony of flagellated cells.
• B)Both animals and fungi are descended from an ancestor that resembles a spherical colony of flagellated cells.
• C)All animals are descended from an ancestor that resembles a single celled organism that was a flagellated cell.
• D)None of these describe the colonial flagellate hypothesis.

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Definitions:

Merkel Cells

Specialized skin cells involved in the sense of touch, capable of detecting textures and shapes.

Root Hair Plexuses

Nerve fiber networks found in the dermal layer of the skin that allow for the sensation of touch in hair-covered skin.

Baroreceptors

Sensory nerve endings in the cardiovascular system sensitive to blood pressure changes, helping in reflex control of the blood pressure.

Proprioceptors

Sensory receptors found in muscles, tendons, and joints that provide information about body position and movement.