Exam 14: Predation

A predator that consumes animal tissue is called a ________.

According to the optimal foraging theory, a predator should abandon a patch

Using specific examples, discuss bottom-up and top-down regulation of population size.

Give two examples of considerations besides food acquisition that might influence an animal's decision about whether and for how long to forage in a given resource patch. What rules might an animal use to make a decision?

A numerical response of predators through movement of predators into areas of high prey density is referred to as a(n)________ response.

In the basic Lotka-Volterra equations that describe predator-prey interactions, the growth rate of the prey population (dNpᵣₑᵧ/dt)is zero when the density of predators (Npᵣₑᵧ)is equal to

Which animal does NOT employ protective armor for predator defence?

Defoliation kills deciduous plant species.

Which of the following is functionally a true predator?

Plants contain a wide variety of chemicals, called ________, that are not involved in the basic metabolism of their cells but may be used to prevent or deter herbivory.

The Red Queen Hypothesis describes the response that predators make to increasing prey density.

________ colouration allows prey to blend into the background and avoid predation.

A ________ wholly consumes animal tissue.

Describe several different types of prey defences against predators and give an example of each.

________ occurs when prey produce so many offspring in a short period of time that predators can only attack a fraction of them.

________ growth is the increased production of biomass as a response to grazing.

A type ________ functional response occurs when the number of prey taken per predator increases quickly at first with prey density and then increases at a much slower rate as prey density continues to increase.

________, or the amount of biomass eaten, is not necessarily the best measure of the importance of herbivory within a community.

A type I functional response leads to regulation of the prey population by the predator.

The risk of predation can sometimes have a significant impact on the foraging choices made by animals.