Ecosystem Dynamics

The role an organism plays in an ecosystem...

• habitat

• species

• niche

• producer

A population will increase when which of the following occurs?

• emigration

• resources decrease

• immigration

• organisms in the population die

Which of the following is NOT an abiotic factor of a terrestrial ecosystem?

• water availability

• temperature

• fungi

• oxygen

The flow of energy in an ecosystem can be seen in a...

• species

• food chain

• biome

• community

Tags

NGSS.MS-LS2-3

What is true about a population that has reached its carrying capacity?

• it has reached the largest size that can be sustained by available resources

• it begins to grow as resources become available

• it decreases dramatically as resources are removed

• its size is no longer dependent on the amount of resources present

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Plants cannot survive without an a lot of nutrients in the soil. Which group adds nutrients to the soil?

• producers

• decomposers

• herbivores

• consumers

How does an ecosystem differ from a community?

• an ecosystem includes biotic/abiotic factors while a community does not

• an ecosystem includes all populations in an area while a community does not

• A community includes biotic/abiotic factors while an ecosystem does not

• A community includes all populations in an area while an ecosystem does not

Under which of the following situations will a population decrease?

• emigration

• births

• immigration

• an increase in resources

Tags

NGSS.MS-LS2-4

Pollen in flowers is a source of food for bees. On the other hand, bees are a means of pollination for flowers. What type of interaction is this?

• mutualism

• predator-prey

• interspecific competition

• intraspecific competition

Tags

NGSS.MS-LS2-2

Which of the following is a biotic factor in a forest ecosystem?

• temperature

• precipitation

• soil nutrients

• trees