Chapter 18 Section 1 Introduction to Ecology



Chapter 18 Section 2: Ecology of Organisms (p. 363 – 365)

1. The place where an organism lives is its ____________________.

2. Compare/contrast abiotic factors with biotic factors and list two examples of each.

3. Why do biotic factors depend on abiotic factors for survival? Explain.

4. Some organisms are only able to survive within a specific range of conditions such as temperature. A graph of performance versus values of an environmental variable, such as temperature, is called a ___________ _____________.

5. What does a tolerance curve indicate about an organism?

6. Can an organism survive outside conditions that are not optimal? In other words, can an organism survive in conditions that they are not used to? Explain.

7. What if an organism is outside its tolerance limits? What would happen to that organism and why?

8. Compare and contrast conformers and regulators.

9. Some species can survive unfavorable environmental conditions by escaping from them temporarily. Explain how animals survive the heat in a desert ecosystem.

10. Explain how migration allows organisms to cope with a changing environment.

11. Explain the concept of the niche.

12. How does an organism’s niche differ from its habitat?

13. Describe the difference between generalists and specialists and give one example of each.

14. If some resources in a habitat are destroyed, which would be more likely to survive, a generalist or specialist? Explain.

15. A small rodent species and a bird species are adapted to cold temperatures. How might each species survive a major temperature increase?

16. Define the following vocabulary:

Habitat –

Biotic Factor –

Abiotic Factor –

Tolerance Curve –

Acclimation –

Conformer –

Regulator –

Dormancy –

Migration –

Niche –

Generalist –

Specialist -

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