Each of the Following Is True of the Pineal Gland

question 102

Multiple Choice

Each of the following is True of the pineal gland, except that it

• A) is a component of the epithalamus.
• B) is a component of the hypothalamus.
• C) secretes melatonin.
• D) contains pinealocytes.
• E) responds to light and darkness.

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Definitions:

Hox Gene Clusters

Groups of genes that control the body plan of an embryo along the head-tail axis by dictating the positions of various anatomical structures.

Anterior-Posterior Axis

A directional axis in biology, referring to the front (anterior) and back (posterior) orientation of an organism or its parts.

Ray-Finned Fishes

A class (Actinopterygii) of modern bony fishes; contains about 95% of living fish species.

Tetrapods

A vertebrate group that includes all species with four limbs, such as amphibians, reptiles, birds, and mammals, including those that have lost limbs through evolution.