Population Dynamics Biology

What causes competition to occur in an environment?

• Good conditions make resources plentiful.

• Organisms struggle for a limited resource.

• Members of a population have different roles.

• A population falls below the environment’s carrying capacity.

Tags

NGSS.MS-LS2-1

When individuals join a population

• Aliens

• migration

• Immigration

• Emigration

To measure population density, you must divide the number of individuals living in a defined space by the

• area of the space

• birth and death rates

• carrying capacity

• height of the space

Diseases may spread more rapidly when an area is crowded, so disease is considered to be a

• type I survivorship curve

• population crasher

• density-dependent limiting factor

• population enhancer

Tags

NGSS.MS-LS2-4

The distribution of individuals among different ages in a population.

• life expectancy

• age structure

• density

Shows the likelihood of survival at different ages throughout the lifetime of the organism.

• life expectancy

• death rate

• survivorship curve

Tags

NGSS.MS-LS4-4

Which curve is flat at the start, indicating a low death rate in the early and middle stages of life?

• Type I

• Type II

• Type III

Which curve drops sharply at the start, indicating

a high death rate among the young?

• Type I

• Type II

• Type III

Which curve shows a constant death rate over the organism’s life span?

• Type I

• Type II

• Type III

Mammals that produce very few offspring, but provide them with good care are examples of which type of curve?

• Type I

• Type II

• Type III