Which of the Following Statements Is True

question 65

Multiple Choice

Which of the following statements is true?

• A) The trophic level that ultimately supports all others consists of detritivores.
• B) Consumers can exist in an ecosystem without primary producers.
• C) Chemoautotrophic prokaryotes near deep-sea vents are primary producers.
• D) No losses of energy occur from primary producers in an ecosystem.

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Definitions:

Classical Psychophysical

Relates to the traditional study of the relationships between physical stimuli and the sensations and perceptions they produce.

Sensitivity

The capacity to perceive, feel, or be aware of stimuli or changes in the environment; can also refer to the degree of responsiveness to social or emotional matters.

Weber Fraction

A principle that quantifies the perception of change in a given stimulus, stating that the just noticeable difference is a constant proportion of the original stimulus’s intensity.

Difference Threshold

The smallest amount that a given stimulus must be increased or decreased so that an individual can detect the difference.