Which of the Following Is a Feature of the "Tube-Within-A-Tube

question 45

Multiple Choice

Which of the following is a feature of the "tube-within-a-tube" body plan in most animal phyla?

• A) The outer tube consists of a hard exoskeleton.
• B) The outer tube consists of digestive organs.
• C) The mouth and anus form the ends of the inner tube.
• D) The two "tubes" are separated by tissue that comes from embryonic endoderm.

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Definitions:

Neoplasms

Neoplasms are abnormal growths of tissue that arise from uncontrolled, progressive multiplication of cells and can be benign or malignant (cancer).

Accompanying Figure

Auxiliary visual material, such as a diagram or graph, provided to support or illustrate textual information.

Telomerase

An enzyme that adds telomere sequences to the ends of chromosomes, helping to maintain their integrity during cell division.