Unit 5 Outcome 1

The number of organisms that an environment can support is called the

• Life expectancy

• Demography

• Carrying capacity

• Growth rate

When population size exceeds carrying capacity it is referred to as:

• Overshoot

• Growth rate

• Logistic growth

• Exponential growth

Which of the following will cause an increase in population size?

• emigration

• immigration

• Limiting factors

• increased death rate

When each member of a population is counted one by one it is called:

• True Census

• Sample census- quadrant

• Sample census- transect

• Mark and recapture

In order for a population to successfully maintain exponential growth there would need to be

• Limited amount of space available in the habitat

• An unlimited amount of available resources and space

• Human expansion into the ecosystem

• None of the above

You are studying the vegetation communities of the Mongolian grasslands in a 1000-square-kilometer-area. What is your best strategy for estimating the number of individuals of different plant species growing throughout the grasslands?

• Complete a true census

• Use quadrant sampling

• Use mark and recapture

• All ways are the same - it doesn't matter

A population of wolves is reitroduced into Yellowstone National Park. For the first decade, the wolf population grows exponentially. Then, the population growth slows and reaches carrying capacity. The new pattern is known as

• Logistic growth

• Limiting factors

• J curve

• Exponential growth

Which of the following equations would best represent a population that stays right at the carrying capacity?

• Birth rate + immigration = death rate + emigration

• Birth rate + immigration < death rate + emigration

• Birth rate + immigration > death rate + emigration

The human population is currently growing exponentially. What are consequences that can be expected from this continued growth? Provide a detailed explanation (select all that apply)

• This is bad, mmmkay.

• We might run out of fresh water for drinking or for crops in certain parts of the world, causing migration to other areas, whoohoo!

• We might overshoot the carrying capicity (k) of certain areas of the globe, or even (k) of Earth itself, causing a crash in population due to higher death rates, yay!

• If overconsumption and human expansion continues, we might reduce the carrying capacity of planet earth, joy!