Exam 14: Predation and Herbivory

What does it mean when scientists set the alpha at .05 for a statistical test?

The biocontrol species cactus moth (Cactoblastis cactorum) has not been able to eradicate the invasive prickly pear cactus from Australia because

The Indian gray mongoose (Herpestes edwardsii) is a small mammal that is known for its ability to kill venomous king cobras (Ophiophagus hannah). Mongooses have evolved acetylcholine receptors that make them resistant or immune to the cobra's venom. What is likely responsible for this?

Ladybugs (Coccinella septempunctata) produce bad-tasting alkaloids as a chemical defense against predators. Researchers wanted to determine the costs of this chemical defense. They fed ladybugs either small or large amounts of food and measured alkaloid production and concentrations of carotenoids in the ladybug bodies. Carotenoids are the chemicals responsible for the red color of the ladybug, which advertises its unpalatability to predators. What do the results of this experiment, shown in the figure, indicate about costs of chemical defenses?

The resemblance of poison dart frog species of the genus Ranitomeya to one another in Peru is an example of

Describe the difference between Batesian Mimicry and Müllerian Mimicry.

For some predators, as prey density increases, the rate of consumption slows and eventually levels off with satiation. This is a type _____ functional response.

Which of the following chemical defenses makes plants difficult for herbivores to digest?

Which functional response curve shows a slower rate of consumption of prey at low prey density levels due to the predator learning a search image for the prey?

Top predators are predators that eat

A functional response in predatory-prey cycles is the relation between the density of

Which term best describes the brown tree snake based on its impact on the island of Guam?

Which of the following is NOT a behavioral defense against predation?

A numerical response is a change in the number of predators due to all of the following EXCEPT

Researchers studying production of nicotine in tobacco plants (Nicotiana sylvestris) treated some of the plants with a hormone that prevents the chemical defenses from responding to herbivory. What did they find to be the cost of nicotine production?

Alarm signals in primates are an example of

How does the removal of top predators affect mesopredator populations?

Reductions in bay scallops in the Atlantic Ocean were caused by a(n)

The crucian carp (Carassius carassius) develops a muscular hump on its back that increases its acceleration in response to predators. This is an example of

According to Lotka and Volterra, what information was required to calculate the change in population size of the prey over time (dN/dt)?