How Many Total Trophic Levels Are Present in a Food

question 9

Multiple Choice

How many total trophic levels are present in a food web in which the top trophic level consists of secondary consumers? (Do not consider decomposers or omnivores.)

• A) 2
• B) 3
• C) 4
• D) 5

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Definitions:

Just Noticeable Difference

The smallest difference in stimulation that can be reliably detected by an organism.

Absolute Threshold

The minimum intensity of a stimulus that is required for it to be detected by the senses at least 50% of the time.

Perceptual Abilities

The capacity to interpret, analyze, and give meaning to sensory information.

Sensory Organs

Structures within the body that receive and process stimuli from the environment, allowing for perception and response.