Organism's - Marvel EDU

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Practice Listening: Multiple Choice, Single Answer ID: #33881 Short Organism's

Instructions ›

Listen to the recording and answer the multiple-choice question by selecting the correct response. Only one response is correct.

Transcript:

Although scientists observe that an organism's behavior falls into rhythmic patterns, they disagree about how these patterns are affected when the organism is transported to a new environment. One experimenter, Brown, brought oysters from Connecticut waters to Illinois waters. She noted that the oysters initially opened their shells widest when it was high tide in Connecticut, but that after fourteen days their rhythms had adapted to the tide schedule in Illinois. Although she could not posit an unequivocal causal relationship between behavior and environmental change, Brown concluded that a change in tide schedule is one of several possible exogenous influences (those outside the organism) on the oysters' rhythms. Another experimenter, Hamner, however, discovered that hamsters from California maintain their original rhythms even at the South Pole. He concluded that endogenous influences (those inside the organism) seem to affect an organism's rhythmic behavior.

All of the following could be considered examples of exogenous influences on an organism EXCEPT the influence of the.

* Listen to the recording and select the correct answer

level of a hormone on a field mouse’s readiness for mating temperature of a region on a bear’s hibernation salt level of a river on a fish’s migration humidity of an area on a cat’s

Result:

AI explanationShows the answer. Tap to open.

Option 1: "level of a hormone on a field mouse’s readiness for mating"

Explanation: This option refers to an endogenous influence, as hormones are internal factors that affect behavior. The text distinguishes between exogenous influences (external factors) and endogenous influences (internal factors), making this option the correct answer as it does not fit the category of exogenous influences.

Option 2: "temperature of a region on a bear’s hibernation"

Explanation: This option describes an exogenous influence because the temperature is an external environmental factor that affects the bear's behavior. The text supports this by indicating that environmental changes can influence rhythmic patterns, making this option relevant to the question.

Option 3: "salt level of a river on a fish’s migration"

Explanation: This option also represents an exogenous influence, as the salt level in a river is an external environmental factor that can impact the migration patterns of fish. The text implies that such external factors can affect behavior, thus making this option incorrect.

Option 4: "humidity of an area on a cat’s"

Explanation: This option suggests an exogenous influence since humidity is an external environmental condition that could affect a cat's behavior. The text indicates that external factors can influence rhythmic patterns, which aligns with this option, rendering it incorrect as well.

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