Ch 4: Ecology

The energy in most ecosystems come from

• green plants 
• the sun
• wind
• all of the above

Which of the following characteristics is usually shared by bacteria, fungi, and plants?

• They have cell walls.
• They have nuclei.
• They are unicellular.
• They have the ability to make their own food.

The organisms most likely to belong to the same species are

• people at a football game.
• bacteria inside a person's body.
• birds in a forest.
• organisms in a pond.

Which of the following statements about an organisms's habitat is not true?

• Most organisms can survive if they are taken away from their habitat.
• An organism's habitat is the place where it lives.
• A habitat has specific characteristics that an organism needs in order to live there.
• A habitat contains biotic and abiotic factors.

The community of a pond is made up of all the

• abiotic factors in the water.
• resources organisms need.
• habitats in and around the water.
• populations of fish, insects, and other living organisms.

Organisms can adapt

• to their physical surroundings.
• to other organisms.
• Both (a) and (B)
• Neither (a) nor (b).

Some organisms are more likely to survive because they

• have certain physical traits.
• lack certain physical traits.
• engage in certain behaviors.
• All of the above

An organisms is resistant to a chemical if it

• has a gene that enables it to break down the chemical.
• has been exposed to a small amount of the chemical over time. 
• did not eat anything with the chemical on it. 
• All of the above

the process of two species changing genetically in response to long-term interactions with each other is

• artificial selection
• coevolution
• selective breeding
• resistance

In order for evolution to occur in a population, individuals with a trait that is "naturally selected for"

• live for a long time.
• leave the area.
• reproduce.
• coevolve.