Virtual Labs

Biotechnology and Biomedical Engineering Population Ecology Virtual Lab I Experiments

Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

Interspecific Competition and Coexistence

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1. For two competing species (denoted 1 and 2), the population growth rate of species 1 in the presence of species 2 is.

a: Lower at all population sizes of species 1 than in the absence of species 2. Explanation

Explanation

b: Zero when the population reaches K. Explanation

Explanation

c: Dependent on the carrying capacity of species 2. Explanation

Explanation

d: The same as in the absence of species 2. Explanation

Explanation

2. What is the equilibrium population size of a species in the absence of competitors or predators?

a: The population at which the per capita growth rate = 0. Explanation

Explanation

b: The maximum population size the environment can sustain. Explanation

Explanation

c: The population size at which dn/dt=0 (where N refers to the population size). Explanation

Explanation

d: All of these Explanation

Explanation

3. When is competitive exclusion likely to occur?

a: When interspecific competition is less intense than intraspecific competition. Explanation

Explanation

b: When two species exhibit resource partitioning. Explanation

Explanation

c: When interspecific competition is more intense than intraspecific competition. Explanation

Explanation

d: When the inferior competitor has a refuge in the environment. Explanation

Explanation

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