Exam 23: Ecological Communities

Which of the following statements about competition is false?

Which of the following symbols represents a commensalistic relationship?

Flies belonging to the family Phoridae inject their eggs into fire ants. A larva that hatches from the egg devours the ant from the inside. The larva would be called a

Clown fish have evolved to live safely between the stinging tentacles of certain sea anemones. The fish receives protection from predators, whereas the anemone receives some food from the fish. This relationship is an example of

Responses that are directly stimulated by an attack from herbivores are ____________________ responses.

The climate of a given location can change over time for two reasons: global climate change and

The ____________________ of a community has two components: the number of different species that live in the community, and the relative abundances of those species.

____________________ is an interaction between two species that benefits both species.

A praying mantis captures and devours many pest insects. The relationship between a mantis and a grasshopper it is eating is one of

In a typical prairie food web, energy moves from grass to grasshopper to field mouse to fox. Which organism is the primary consumer?

Interactions among organisms are always mutually beneficial.

Female ducks frequently deposit fertile eggs in the nests of unattended neighboring ducks. These eggs hatch and are then reared by the foster parent. What term best describes this behavior?

Which of the following best illustrates behavioral mutualism?

Pancake batter consists of flour, eggs, butter, salt, baking powder, sugar, and milk. When we eat pancakes, we are acting as

Beech drops are plants that no longer photosynthesize. They obtain nutrition by extending their roots into a beech tree and intercepting the flow of sap. Beech drops would be considered a _____ of beech trees.

The activity of predators has caused their prey to evolve a variety of protective characteristics. How were the prey able to acquire these new features?

The corals in tropical reefs have a mutualistic relationship with

A community may begin when a new ____________________ is formed, such as when rock and soil are deposited by a retreating glacier.

The bacteria in yogurt can colonize the human intestine and participate in a symbiotic relationship called ____________________.

If an animal is an herbivore, does that mean it cannot have interactions with organisms other than the plants it eats?