Practice Questions

TLS Online TPP Program

#Question id: 12462

For most terrestrial ecosystems, pyramids of numbers, biomass, and energy are essentially the same-they have a broad base and a narrow top. The primary reason for this pattern is that

#Unit 10. Ecological Principles

Secondary consumers and top carnivores require less energy than producers.
At each step, energy is lost from the system as a result of keeping the organisms alive.
As matter passes through ecosystems, some of it is lost to the environment.
Biomagnification of toxic materials limits the secondary consumers and top carnivores.

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TLS Online TPP Program

#Question id: 12471

#Unit 10. Ecological Principles

To measure the population density of monarch butterflies occupying a particular park, 100 butterflies are captured, marked with a small dot on a wing, and then released. The next day, another 100 butterflies are captured, including the recapture of 20 marked butterflies. One would estimate the population to be

TLS Online TPP Program

#Question id: 12472

#Unit 10. Ecological Principles

During the spring, you are studying the mice that live in a field near your home. There are lots of mice in this field, but you realize that you rarely observe any reproductive females. This most likely indicates

TLS Online TPP Program

#Question id: 12473

#Unit 10. Ecological Principles

You are observing a population of lizards when you notice that the number of adults has increased and is higher than previously observed. One explanation for such an observation would include

TLS Online TPP Program

#Question id: 12474

#Unit 10. Ecological Principles

The most common kind of dispersion in nature is

TLS Online TPP Program

#Question id: 12475

#Unit 10. Ecological Principles

Uniform spacing patterns in plants such as the creosote bush are most often associated with

TLS Online TPP Program

#Question id: 12476

#Unit 10. Ecological Principles

Which of the following groups would be most likely to exhibit uniform dispersion?