For which of the following populations would biologists most likely use number of individuals per unit of volume, rather than number of individuals per unit of area, in measuring population density?
A) Guppies in a lake
B) Pine trees in a forest
C) Squirrels on a campus
D) Mice in a patch of grassland
E) Oak seedlings in a backyard

Question

Quizplus · Accepted Answer

Number of individuals per unit of volume would be most appropriate for measuring the population density of guppies in a lake because they are aquatic animals that occupy a three-dimensional space. The other populations listed are terrestrial and occupy a two-dimensional space, making number of individuals per unit of area more appropriate for measuring their population density.

For Which of the Following Populations Would Biologists Most Likely