Which of the Following Observable Characteristics Places the Yunnanzoan Fossils

question 52

Multiple Choice

Which of the following observable characteristics places the yunnanzoan fossils in the deuterostome group?

• A) Radial symmetry
• B) Pharyngeal slits
• C) Radial cleavage
• D) Formation of the anus from the blastopore
• E) Light cuticle

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Definitions:

Rotate

The action of turning around an axis or center point, either in objects or in anatomical terms as movements of body parts.

Head

The upper part of the human body, or the front or upper part of the body of an animal, containing the brain, eyes, ears, nose, and mouth.

Sphincter

A circular muscle that controls the passage of substances through an opening in the body, such as the anus or the esophagus.

Orbicular

Shaped like a circle or orbit; referring to muscles that encircle openings in the body, such as the orbicularis oris muscle around the mouth.