Population Density Ecology

the number of people in a defined area such as a square kilometre

• population density

• birth rate

• death rate

• population

Why don't populations grow indefinitely?

• limiting factors

• only biotic factors

• only abiotic factors

• none of the above

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What is an example of a density-independent (Abiotic) limiting factor?

• food

• parasites

• disease

• pollution

What is the arrow pointing at?

• carrying capacity

• biotic potential

• density-independent

• density dependent

Tags

NGSS.HS-LS2-1

Which of the following populations is most likely to go extinct?

• a very small population in an unstable environment

• a moderate-sized population of r strategists

• a large population with lots of genetic variability

• all would be equally likely to go extinct

Tags

NGSS.MS-LS2-1

NGSS.MS-LS4-4

parasites, disease, predators, are examples of what type of limiting factors?

• density dependent

• density independent

• survivorship

• type 1 curve

Tags

NGSS.MS-LS2-4

What is the carrying capacity mean?

• The number of individuals an area can carry

• the number of births

• The number of deaths an area has

• not sure

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

The average number of individuals per unit of area or volume is called ______.

• Population size

• Population systematics

• Population density

• Population distribution

The common brushtail possum is a marsupial native to Australia. This possum was introduced to New Zealand where it had no natural predators and had an abundant food supply. Which of these likely occurred a few years after the introduction of this possum to New Zealand?

• The possums became extinct.

• The possums developed shorter life spans.

• The possum population grew to a larger size.

• The possum population evolved into a different species.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

These organisms typically live in unstable, unpredictable environments & are able to reproduce rapidly (exponentially). They do not take care of their young & are subject to predation.

• k-strategist

• r-strategist

• m-strategist

• s-strategist