Exam 30: Population Interactions and Community Ecology

Most bats emit high-frequency and high-intensity sounds, and by their returning echoes, create an image about their surroundings. Under selective pressure from this prey-location system, certain moths (which are bats' prey) have evolved simple ears that are particularly sensitive to frequencies used by bats. When they hear the bats, they drop to the ground. The bats, in turn, have switched their sound frequency away from the moth's sensitivity range. What do we call this type of adaptation in both bats and moths?

Match each description to the appropriate term. -two or more species use the same limiting resource

The relationship between the bull's horn acacia tree and a species of small ants is a highly coevolved predation.

Explain the concept of ecological niche.

When populations of antelope and cheetah coexist, what changes in the populations are likely to occur due to natural selection?

A tropical rain forest would most likely include vegetation that includes a canopy.

Elephants and some other large carnivores are species with few predators.

Which of the following is classified as an endoparasite?

Which factor has the most effect on species' richness on an island?

Mutualism is common between flowering plants and animal pollinators.

Use the terms in the list to identify each lettered portion of the food web. -primary producers

Which of the following defines interference competition?

Use the terms in the list to identify each lettered portion of the food web. -primary consumers

Which factor is involved in the optimal foraging theory?

Which sentence best summarizes the relationship between species richness and recovery from natural disturbances?

Match each lettered cell in the table with the description that belongs in that cell. -one population obtains energy from plants; plants are destroyed

Match each lettered cell in the table with the description that belongs in that cell. -both populations benefit

Use the terms in the list to identify each lettered portion of the food web. -secondary consumers

Compare fundamental and realized niche.

In the 1960s, it was felt that the major factor influencing community structure was competition.