Exam 14: Predation

European kestrels feed on Microtus voles,with the "kill" rate,defined as the number of prey taken during the breeding season,as linearly proportional to the density of Microtus.This type of functional response is referred to as

Most grasses tolerate grazing and actually benefit from it.

With a highly abundant prey population size,which component of the functional response is most reduced?

Some animals acquire their toxic chemical compounds from plants that they consume.

The cycle of change in the size of predator and prey populations in response of one to the other is known as ________.

An organism that feeds on plant or algal tissues is referred to as a(n)

________ defenses are not permanently present but,rather,are brought about by the presence or action of predators.

The Lotka-Volterra model of predator-prey interactions assumes a mutual regulation of predator and prey populations.

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

The maximum number of prey consumed per predator per unit time is limited by

The concept of ________ energy is the basis for models of optimal foraging.

The profitability of a prey item

Cryptic coloration is a strategy employed only by prey.

Which of the following caused massive declines in U.S.commercial fish populations?

Which of the following is an induced defense?

A species that consumes only animal tissue is called a(n)________.

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

Herbivory does not affect a plant's ability to survive.

In the Lotka-Volterra models of predator-prey interactions,prey density does not influence predator mortality.

A species that consumes both plant and animal tissue is called a(n)________.