Population Ecology and Succession

The term ecologists use to describe the number of individuals moving away from a population is

• Emigration

• Immigration

If the number of births in a population is the same as the number of deaths in a population, what will happen to the growth of the population?

• It will increase.
• It will decrease.
• It will stay the same.
• It will fluctuate.

If the number of births is greater than the number of deaths in a population, what will happen to the growth of the population?

• It will increase.
• It will decrease.
• It will stay the same.
• It will fluctuate.

Factors that affect population size:

DECREASE: Number of ___________ & ____________

Choose all that applies.

• Birth

• Death

• Immigration

• Emigration

What type of growth is represented by the J-shaped curve shown below? 

• logistic

• linear

• exponential

• random

Which factor can limit the carrying capacity of a population?

• emigration

• predation

• available nutrients

• extreme temperatures

This graph shows...

• Logistical Population Growth

• Exponential Population Growth

The carrying capacity is the...

• Difference in final population from the initial population

• Lowest point in population growth

• Maximum number of organisms an environment can sustain

• Fastest portion of growth on the population graph

The carrying capacity shown on this population graph is about...

• 2 million

• 1 million

• 1.75 million

• 1.5 million

1. Which is a density-independent factor for a flock of Canada geese on a large lake?

• dwindling food supply

• intestinal worms

• infectious virus

• unusually cold winter