Chapter 19, Problem 1ACQ

Figure 19.2 As this graph shows, population density typically decreases with increasing body size. Why do you think this is the case?

Summary Introduction

To write:

The population density depending upon the body size of the organisms.

Introduction:

Populations are dynamic entities. In response to various factors, their size and composition change, including seasonal and annual changes in the environment, natural disasters such as volcanic eruptions, forest fires, and competition between or within species for resources.

Explanation of Solution

The graph depicts a density-dependent population. Populations are identified by population size and population density. A population can have a large number of people densely or sparsely distributed. There are also populations with small amounts of individuals that can be dense or very slightly distributed in a local area. Population size may affect the adaptation potential as it affects the number of genetic variation in the population. Density can affect interactions in a population such as food competition and individuals ' ability to find a partner. Smaller individuals are more densely distributed than larger individuals.

Conclusion

Thus, the size of the body is regulating the density of the population. The population with smaller body size shows more density than those which have a larger body size.