The Spiral Valve in the Intestine of a Shark Serves

question 37

Multiple Choice

The spiral valve in the intestine of a shark serves to

• A)release strong acids to aid digestion.
• B)function as a liver in producing bile salts.
• C)entrap food molecules in a mucus strand.
• D)slow passage of food and increase absorptive surface area.
• E)propel food through the tract at a faster rate.

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Definitions:

Ovules

The structure in seed plants that develops into a seed after fertilization, containing the female reproductive cells.

Gnetophyte Genus

A classification within Gnetophyta, a division of plants that have some angiosperm-like features but are considered gymnosperms.

Southwestern Africa

A region in Africa that includes countries like Namibia and Angola, characterized by diverse ecologies and cultures.

Pinus

A genus of trees in the pine family, known for having needle-like leaves and producing cones.