Stream Succession Is Rapid Because

question 75

Multiple Choice

Stream succession is rapid because

• A) disturbed sites receive constant inputs of nutrients via runoff.
• B) organisms that live in streams have rapid growth rates.
• C) organisms can move downstream from less-disturbed sites.
• D) disturbances that occur in stream communities are often not severe.

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Definitions:

Suspension Feeders

Organisms that feed by filtering suspended matter and food particles from water, often found in aquatic environments.

Filter Feeders

Aquatic animals that feed by straining suspended matter and food particles from water.

Omnivores

Organisms that consume both plant and animal matter as part of their diet.

Gastric Glands

Glands in the wall of the stomach; contain cells that secrete hydrochloric acid, intrinsic factor, and pepsinogen, the precursor of the enzyme pepsin.