Exam 2 Review

Which of the following statements correctly describes organisms in this food web?

• The birds are producers

• The algae are consumers.

• The worms are carnivores.

• The bacteria are decomposers.

Which of the following best describes the changes that take place in an ecosystem during primary succession?

• Lichens and mosses grow slowly on newly formed land, followed by grasses, shrubs, and trees.

• Organisms compete for resources, and those that are best fit to survive establish themselves as the dominant species.

• Natural disasters cause many populations to migrate to a new location in order to survive.

• Shrubs and trees regrow quickly in areas that have been disturbed by a forest fire.

Coyotes are opportunistic predators that are found throughout most of North America. They typically feed on small mammals, insects and fruits and vegetables. They are known for dietary adaptability. The best description of their role in the food web would be:

• a primary producer

• an herbivore

• an omnivore

• a carnivore

Suppose a frog eats a moth. The frog would capture only 10% of the available energy. What happened to the remainder of the energy?

• It is used for life processes and released as heat.

• It is recycled by the predators.

• It is passed on to the next trophic level

• It is transferred to light energy.

A group of organisms of different species living together in a particular place is called a

• habitat

• community

• biome

• population

What is at the base of all ecological pyramids?

• scavengers

• producers

• decomposers

• consumers

What type of succession is shown going from figure A to figure B?

• primary succession

• secondary succession

• aquatic succession

• pioneer species

Competition between two species occurs when:

• Mold grows on a tree that has fallen in the

• Chipmunks and squirrels eat sunflower seeds in a garden

• A crow feeds on the remains of a rabbit killed on the road

• A lion stalks, kills and eats an antelope

When an environment has reached its carrying capacity for a certain population, which of the following is true?

• Growth and immigration rate is equal to death and emigration rate.

• Growth and immigration rate is greater than death and emigration rate.

• Growth and immigration rate is less than death and emigration rate

• Growth rate is exponential.

A florist places a bouquet of white carnations in water containing blue dye. After a time, the flowers turn blue. What process helped the carnations to change color?

• Specific heat

• Surface tension

• Cohesion and adhesion of water molecules

• Formation of covalent bonds between hydrogen and oxygen molecules