1. All living things are part of a population. True or False
2. Adding more organisms to a population does not affect the existing populations. True or False
3. Populations go up or down depending on the resources available. True or False
4. Populations of tulips do not compete with other organisms. True or False
5. Human populations sometimes cause other populations to move. True or False

6. Which of the following make up populations?
A. Plants
B. Insects
C. Microorganisms
D. All of the above

7. Which of the following is true about populations?
A. Populations always increase.
B. Human populations have doubled in size.
C. Human populations have stayed about the same.
D. None of the above

8. Which of the following determines the success or failure of a species?
A. Rate of reproduction
B. Amount of food supply
C. Number of natural enemies
D. All of the above

9. Which of the following is true about deer and wolf populations?
A. As the wolf population decreases, the deer population also will decrease.
B. As the wolf population increases, the deer population decreases.
C. The deer population has no effect on the wolf population.
D. As the wolf population increases, the deer population also increases.

10. Which of the following is the definition of an endangered species?
A. A population that is no longer alive
B. A population who has large numbers
C. A population that is in danger of becoming extinct
D. A population that can be legally hunted

11. Which of the following does NOT make up a population?
A. plants
B. insects
C. computers
D. bacteria

12. Different populations compete with each other for available resources such as:
A. space
B. nutrients
C. sunlight
D. All of the above

13. Populations of tiny organisms smaller than the human eye can see are called _______.
A. fungi
B. plants
C. parasites
D. bacteria

14. A parasite is a living thing that:
A. makes spaces overpopulated.
B. lives off of another living thing.
C. endangers other living things.
D. resembles a weed.

15. _______ are organisms that are in danger of becoming extinct.
A. Habitats
B. Populations
C. Endangered species
D. Microorganisms