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Ecology-Section Reviews

1. Give three examples of things classified as biotic factors.

2. Give three examples of things classified as abiotic factors.

3. What parts of Earth make up the biosphere?

4. Give two examples of ecosystems.

5. Explain how the niche of one organism can affect other organisms in the same ecosystem.

6. Do you think the soil in the rain forest is of a very high quality or of a very poor quality? Explain.

_____1. nonliving parts of the environmenta. niche
_____2. study of organisms and their interactions with the environmentb. abiotic factors
_____3. role an organism plays in the environmentc. biosphere
_____4. protection, management, and renewal of natural resourcesd. ecosystem
_____5. region of Earth that supports lifee. ecology
_____6. living parts of the environmentf. conservation
_____7. union of organisms and abiotic factorsg. biotic factors

Complete the following chart:

BIOMECLIMATEPLANT LIFE ANIMAL LIFE
Tropical Rain Forest
Desert
Chaparral
Grassland
Deciduous Forest
Taiga
Tundra

Matching:

_______ 1. transfer of energy and matter in a communitya. food web
_______ 2. organisms that make food for the entire communityb. carnivores
_______ 3. consumers that feed on dead organismsc. food chain
_______ 4. organisms that eat only plantsd. producers
_______ 5. animals that eat only animalse. omnivores
_______ 6. animals that eat producers and consumersf. biomass
_______ 7. energy flows from one organism to another through g. ecological pyramid
each trophic levelh. herbivores
_______ 8. interconnected food chains in an ecosystemi. trophic levels
_______ 9. total mass of organic matter at each trophic levelj. scavengers
_______ 10. relationship between producers and consumers
at different trophic levels

1. What are the main trophic levels?

2. What kind of organisms are always located at the base of a food chain, a food web, or an ecological pyramid?

2. Explain how primary and secondary consumers differ.

3. What is a tertiary consumer?

4. Give an example of each of the following: scavenger, herbivore, carnivore, omnivore,
and decomposer.

5. Explain how biomass and the energy at each trophic level relate to the organisms in the community.

POPULATION ECOLOGY

1. What is a population?

2. Explain the job of population ecologists.

3. What are limiting factors?

4. List five factors that can be considered limiting factors.