REVIEW CH 19 AND 20

 1. List the types of dispersion of

population as pictured above. a. RANDOMb. UNIFORMc. CLUMPED

2. Which type of dispersion is located at regular intervals?

UNIFORM

3. Define carrying capacity then identify which section on the graph represents carrying capacity.

Carrying capacity is the maximum number of individuals the environment can support. B.

4. Which part of the graph represents exponential growth?

A---- look for the “J” shape5. Of the 3 parts of the graph, decide

whether the population: grew, shrank, or stayed the same in the period of time.

A. grew, b. stayed the same, c. shrank

USE GRAPH FOR THE FOLLOWING:

6. Why is age structure important if you were going to study a population? What would it tell you about the future of that population?

 It tells you the various ages of the population and you can use this to help predict the pattern of population growth. A population that has a lot of individuals in child bearing age is much more likely to increase!

Also remember the other properties of population: size, density, and dispersion!

PROPERTIES OF POPULATION

7. Competition and disease are two types of what?

 DENSITY DEPENDENT LIMITING FACTORS

8. Weather and natural disasters such as floods and fires are types of what?

DENSITY INDEPENDENT LIMITING FACTORS

DDLF VS. DILF

9. Small populations are more likely to have what two events happen?

INBREEDINGEXTINCTION

SMALL POPULATION

10. List the 3 types of symbiotic relationships and define each.

PARASITISM- ONE IS HARMED THE OTHER ONE IS HELPED.

COMMENSALISM- ONE IS HELPED THE OTHER ONE IS NOT AFFECTED

MUTUALISM- BOTH BENEFIT

SYMBIOSIS

11. Space, food and mates are 3 types of ____________________ _______________?

LIMITING FACTORS!!! ANYTHING THAT LIMITS A POPULATION IS A LIMITING FACTOR.

LIMITING FACTORS

12. What is the difference between intraspecific competition and interspecific competition?

INTRASPECIFIC- 2 OF THE SAME SPECIES COMPETING OVER A RESOURCE

INTERSPECIFIC- 2 DIFFERENT SPECIES COMPETING OVER A RESOURCE

COMPETITION

13. Explain the diff erence between primary and secondary succession. 

PRIMARY SUCCESSION- IS THE GROWTH OF A COMMUNITY STARTING FROM SCRATCH. NO SOIL INITIALLY. NEVER BEEN ESTABLISHED BEFORE.

SECONDARY SUCCESSION- REGROWTH OF AN AREA, SOIL PRESENT, WAS ONCE ESTABLISHED THEN A DISTURBANCE HAPPENED SO IT HAD TO START OVER.

TYPES OF SUCCESION

14. Which type of model shows how the populations have changed over a period of time?

DEMOGRAPHIC TRANSITION MODEL

15. What is an example of ecological succession?

POND CHANGING INTO A MEADOW

ECOLOGICAL SUCCESSION

16. List 2 predator and prey adaptations.

PREDATOR- VENOM, SHARP TEETH, SPEED, SENSE OF SMELL

PREY- MIMICRY, CAMOFLAUGE, FLEE, POISONOUS

17. Define mimicry and give an example. One species resembles another.KING SNAKE AND THE CORAL SNAKE

PREDATION