EVS Population Ecology Quiz Fall 2024

True or False: A keystone species is an organism that helps define an entire ecosystem. Without its keystone species, the ecosystem would be dramatically different or cease to exist altogether.

• True

• False

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

True or False: Limiting factors within an ecosystem determine the carrying capacity of that ecosystem.

• True

• False

Tags

NGSS.MS-LS2-4

True or False: Immigration and increased birth rate would cause a decrease in a population's size.

• True

• False

Tags

NGSS.MS-LS2-4

True or False: The number of individuals that an environment can support is the population density of that environment

• True

• False

A researcher uses a logistic model of population growth. Which statement best describes the relationship between time and the population size in a logistic growth model?

• Over time, population size increases without limit

• Over time, population size increases and then levels off to a maximum value.

• Over time, population size decreases and then levels off to a minimum value

• Population size is not related to the passage of time

Tags

NGSS.HS-LS2-6

As limiting factors, how do diseases differ from forest fires?

• Diseases can slow the growth of a population.

• Diseases increase carrying capacity of an ecosystem.

• Diseases reduce all populations in an ecosystem by the same proportion.

• Diseases have a greater effect on a dense population than one that is less dense.

Tags

NGSS.MS-LS2-4

Which of the following would NOT increase a population's size?

• More births than deaths

• More deaths and births

• Immigration

• They all will increase population size.

In a given population, the birth rate is equal to the death rate. Which of the following would be a true statement about this population?

• The population is growing exponentially.

• The population is decreasing in size.

• The population is remaining constant in size.

• The population is increasing in size.

Which of the following would most likely occur if a population exceeded the carrying capacity of the environment?

• The birth rate would likely increase.

• The population would experience exponential growth.

• The birth rate would be equal to the death rate.

• The death rate would increase.

Which letter represents the carrying capacity of this environment?

• A

• B

• C

• Not labeled

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1