Bio B Final Exam Review

What is the term for an organism that hunts and eats another organism for food?

• Producer

• Predator

• Prey

• Decomposer

Which of the following best describes a prey in a predator-prey relationship?

• An organism that decomposes dead matter

• An organism that is hunted and eaten by another

• An organism that produces its own food

• An organism that competes for resources

Which of the following is an example of a disruption in an ecosystem?

• Seasonal migration

• Introduction of an invasive species

• Photosynthesis

• Water cycle

What typically happens to the prey population if the predator population increases significantly?

• Prey population increases

• Prey population decreases

• Prey population remains the same

• Prey population becomes extinct immediately

Which of the following is a possible result of a major disruption, such as a forest fire, in an ecosystem?

• Increased biodiversity immediately

• Succession begins to restore the ecosystem

• All species become extinct

• No change occurs

A sudden decrease in the prey population will most likely cause which of the following changes in the predator population?

• Predator population will increase

• Predator population will decrease

• Predator population will remain the same

• Predator population will become extinct immediately

If a disease wipes out a large number of predators in an ecosystem, what is the most likely short-term effect on the prey population?

• Prey population will decrease

• Prey population will increase

• Prey population will remain unchanged

• Prey population will become extinct

Which scenario best illustrates a disruption in an ecosystem?

• A balanced food web

• Introduction of a non-native predator

• Regular seasonal changes

• Stable population sizes

How might the removal of a top predator from an ecosystem affect the populations of other organisms?

• All populations will decrease

• Prey populations may increase, affecting other species

• Only the predator population is affected

• No effect on the ecosystem

Which of the following is an example of succession after a disruption in an ecosystem?

• Immediate return to original state

• Gradual growth of grasses, then shrubs, then trees

• Permanent loss of all life

• No change in plant life