2nd Semester Final (21-40)

21. A diagram that shows the feeding relationships between organisms in an ecosystem

• a. food chain
• b. herbivore
• c. food web
• d. carnivore

22. Organisms that can make their own food from sunlight are called

• a. decomposers
• b. consumers
• c. producers
• d. carnivores

23. A relationship between two organisms in which one benefits and the other is not affected

• a. coevolution
• b. symbiosis
• c. mutualism
• d. commensalism

24. A relationship where one organism benefits and the other is harmed

• a. prey
• b. parasitism
• c. mutualism
• d. commensalism

25. A relationship between two species in which both species benefit

• a. prey
• b. parasitism
• c. mutualism
• d. commensalism

26. The largest population an environment can support is its

• a. carrying capacity
• b. limiting factor
• c. population
• d. symbiosis

27. change of water from vapor to liquid

• a. condensation
• b. runoff
• c. precipitation
• d. evaporation

28. change of water from liquid to vapor

• a. condensation
• b. evaporation
• c. ground water
• d. precipitation

29. Bacteria break down organic matter and return carbon dioxide and water to the environment. This is an example of

• a. combustion
• b. transpiration
• c. nitrogen fixation
• d. decomposition

30. Why do organisms need nitrogen?

• a. to transport nutrients
• b. to build proteins and DNA
• c. to transport wastes
• d. to regulate temperature