Refer to the Figure

question 20

Multiple Choice

Refer to the figure.
In the 1980s, efforts to control pest populations of cockroaches often involved glucose baits laced with insecticide. Over time, these baits became less effective because populations that had been exposed to them for many generations tended to avoid them. Additionally, in individuals exhibiting glucose avoidance, taste receptor neurons that were normally only activated by bitter substances were activated by glucose instead. Given this background and the data in the figure, which of the following statements is false?

• A) The fact that individuals avoiding glucose had higher survival and reproductive success provides the ultimate explanation for the evolution of glucose avoidance in cockroaches.
• B) The change in the sensitivity of taste receptor neurons provides a proximate explanation for the evolution of glucose avoidance in cockroaches.
• C) Glucose-avoiding cockroaches show a response to corn syrup (which contains both glucose and fructose) that was intermediate between their response to glucose or fructose alone.
• D) The diets of wild type cockroaches in these experiments consists of at least 40% plain agar, without glucose.

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Definitions:

Hardiness

The personal quality of being able to endure difficult conditions and stress without becoming distressed.

Hardiness

A personality trait characterized by resilience and the ability to endure stressful situations.

Consideration

The act of thinking carefully about something, especially when making decisions or forming opinions.

Commitment

A psychological state or an act of dedicating oneself to a cause, activity, or relationship, often implying a long-term engagement.