Population Ecology (H)

Population ecology most directly focuses on _

• Population growth

• Interactions between organisms

• The availably of abiotic resources

• The health of ecosystems

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

Birth and death are the only factors that impact population size/growth

• True

• False

Answer explanation

Birth, death, immigration, and emigration all impact population size/growth. Birth and immigration increase population size while death and emigration decrease population size.

The change in population size over time is equal to the _ (if immigration and emigration are not occurring).

• Birth rate - death rate

• Birth rate x death rate

• Birth rate / death rate

• Birth rate x r_max

• r_max + death rate

Tags

NGSS.HS-LS2-6

Which of the following is involved in exponential growth?

• Carrying capacity

• Growth without constraints

• Log curves

• Biotic and abiotic growth-limiting factors

If a population is growing exponentially, the change in population size over time is equal to _. r_max is the maximum growth rate

• r_max x population size

• r_max / population size

• r_max + population size

• r_max - population size

Tags

NGSS.HS-LS4-2

The _ model of population growth shows how populations grow with restrictions (ex. limited food)

• Logistic

• Exponential

• Disruptive

• Adaptive

• Quadratic

Tags

NGSS.MS-LS2-1

NGSS.MS-LS1-5

Which of the following are examples of biotic factors that limit population growth? Select 3

• Predation/hunting

• Competition

• Communicable disease

• Climate/weather conditions

• Natural disasters

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-2

Floods, volcanic eruptions, and fires are all examples of abiotic factors that limit population growth

• True

• False

Answer explanation

Climate/weather conditions and natural disasters are non-living factors that limit population growth.

Tags

NGSS.MS-LS2-1

Certain abiotic resources (ex. water) are typically unlimited in an ecosystem

• True
• False

Answer explanation

Abiotic resources are typically limited in any ecosystem, and this limits population growth.

Tags

NGSS.MS-LS2-1

_ growth is influenced by carrying capacity, the _ number of organisms that can be supported by a population’s habitat

• Exponential, maximum

• Logistic, maximum

• Exponential, minimum

• Logistic, minimum