Question

A species of worm is active at night, and comes to the top of the soil only when it is dark outside. In the daytime, the members of the species stay burrowed several inches beneath the soil. Which of these explanations BEST describes how this nocturnal behavior evolved in the species of worm?A)The worms have a predator with keen night vision.B)The worms have a predator that is active during the day.C)The worms rely on solar energy to increase their body temperature.D)The worms have increased mating opportunities at the surface that require visual cues.

Answer 1

Habits of the Animal

We noticed that the exercise provides us with the following information:

• The animal is ,active at night, and only goes to the surface at night;

,

• He stays during the day underground.

Analyzing the alternatives, we can say that:

• A) is incorrect. The animal goes to the top of the ground at night and this allows us to say that this time is "safe" for it. Therefore, your ,predator ,must be active during the day.

,

• B) is correct. As mentioned in alternative "A", the predator is active during the day.

• C) is incorrect, as it remains buried during the day, so animals do not depend on solar energy.

• D) is incorrect, he increased his mating opportunities at night times.

Answer: B.