Los Hongos

Exam Chapter 1: Populations and Communities
I. Vocabulary
1. Abiotic factor a nonliving part of an organisms habitat
2. Adaptation a behavior or physical characteristic that allows an organism to live successfully
3. Ecology the study of how living things interact with the environment
4. Emigration leaving a population
5. Succession the series of predictable changes thatoccur in a community
6. Natural selection a process by which characteristics that make an individual better suited to its environment
7. Immigration moving into a population
8. Pioneer specie the first specie to populate an area
9. Limiting factor an environmental factor that causes a population to decrease
10. Carrying capacity the largest population that an area can support11. Death rate the number of deaths in a population in a certain amount of time
12. Estimate an approximation
13. Species a group of organisms that are physically similar and can mate with each other
14. Population density the numbers of individuals in an specific area
15. Pray an organism that is killed by other organism
16. Birth rate the number of births in a populationin a certain amount of time
17. Host the organism that a parasite lives in
II. Complete with the correct letter
1. Match:

a. Mutualism
b. Parasitism
c. Symbiosis
d. Commercialism
e. Primary succession
f. Secondary succession






( d ) a relationship between 2 organisms in which one specie benefits and the other is neither helped or harmed( f ) the series of changes that occur in an area where an ecosystem has been disturbed, but soil and organisms still alive
( b ) a relationship in which one organism live on or in a host and harms it
( e ) changes in an area where no organisms exists
( a ) a relationship in which both species benefit
( c ) a close relationship in which at least one specie is harmed2. Match:
g.
a. Population
b. Habitat
c. Niche
d. Ecosystem
e. Community
f. Organism




( d ) the community of organisms that live in the same area
( e ) all different populations that live in the same area
( b ) an environment that provides the things an organism to live
( a ) all members of one specie in aparticular area
( f ) living thing
( c ) the role of an organism in its habitat
III. Answer the questions
1. Write and describe 5 pray adaptations
* False coloring – changes color to appear other animal
* Mimicry – the resemblance of one organism to appear an object
* Protecting covering – a hard shell appears to protect
* Warning coloring - turns to a poisonous color* Camouflage – appears something of the environment
2. What 5 factors does a niche contain?
* Type of food
* How obtains it
* Reproduction
* Physical conditions
* Organisms eaten
3. Why do populations change size?
Because animals die and born
4. When might an ecologist use indirect observation to estimate a population?
When a population is small; toodifficult to find
5. What might cause individuals to immigrate? And to emigrate?
6. Abundant food supply, drought, food scarcity, habitat destruction
7. What are some pioneer species?
Mosses and lichens
8. What are the changes during successions predictable?
Because they follow a pattern
9. What type of succession occurs more rapidly?
Secondary succession

Cross out the correctanswer
1. A prairie dog, a halk, and a badger all are members of the same:
a. Niche
b. Community
c. Species
d. Population
2. All of the following are limiting factors exept:
a. Space
b. Food
c. Time
d. Weather
3. In which type of interaction do both species benefit?
a. Predation
b. Mutualism
c. Commercialism
d. Parasitism
4. Which...