Population Dynamics Unit

Front

Which of the following best defines an ecosystem? a group of species living in a given area, all of the living and nonliving factors in an environment, all of the species living in a given area, the regions on Earth that can support life

Back

all of the living and nonliving factors in an environment

Front

Which of the following is an abiotic factor? wind, mushroom, honey bee, pollen

Back

wind

Front

Which of the following is an abiotic factor? temperature, mold, pine tree, wolf

Back

temperature

Front

An isolated bird population on a remote island remains at a relatively constant size year after year. Which of the following most likely describes the birthrate and death rate for the population? Options: Birthrate and death rate are both zero, Birthrate is significantly lower than death rate, Birthrate is significantly greater than death rate, Birthrate and death rate are closer to equal

Back

Birthrate and death rate are closer to equal

Front

A volcanic eruption kills everything living on the island where it is located. This is an example of

Back

density independent event

Front

A seal and a shark eat the same kind of fish. What ecological interaction describes the relationship between them?

Back

competition

Front

A tapeworm lives inside the digestive tracts of a sheep and feeds on the nutrients of the food the sheep eats. What type of ecological interaction does the tapeworm have with the sheep?

Back

parasitism

Front

What is best represented by the letter K? Options: average life span of a species, extinction, carrying capacity, biodiversity level of the habitat

Back

carrying capacity

Front

What would be the most likely effect if several species of carnivores are removed from an ecosystem?

Back

a decrease in community stability

Front

What type of ecological interaction is represented by a bee collecting nectar from a flower?

Back

Mutualism