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# REVIEW CH 19 and 20 - PowerPoint PPT Presentation

REVIEW CH 19 and 20. 1. List the types of dispersion of population as pictured above. a . RANDOM b . UNIFORM c. CLUMPED 2. Which type of dispersion is located at regular intervals ? UNIFORM. USE GRAPH FOR THE FOLLOWING:.

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• 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” shape

• 5. 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

PROPERTIES OF POPULATION above.

• 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!

DDLF VS. above.DIlf

• 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

SMALL POPULATION above.

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

• INBREEDING

• EXTINCTION

SYMBIOSIS above.

• 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

LIMITING FACTORS above.

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

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

COMPETITION above.

• 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

TYPES OF SUCCESION above.

• 13. Explain the difference 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.

ECOLOGICAL SUCCESSION changed over a

• 15. What is an example of ecological succession?

• POND CHANGING INTO A MEADOW

PREDATION changed over a

• 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