Populations, Communities and Ecosystems

What is the largest level of ecological organization that can be observed in the image?

• Species

• Population

• Community

• Ecosystem

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-5

Choose the correct levels of Organization from lowest to highest...

• population, community, ecosystem, organism

• organism, population, community, ecosystem

• organism, population, ecosystem, community

• population, organism, community, ecosystem

A community is a level in organization that is....

• made of populations of different species that live in the same place and interact.

• a single individual species of organisms that are similar.

• all the individual organisms of the same species in the same place.

The living or once living parts of an organism's environment are called its...

• community

• habitat

• biotic factors

• abiotic factors

Which explanation BEST describes why your answer defines a population?

• They are all the populations of the different species in a particular

  area.

• They are a group of interacting organisms of the same species located

  in the same area.

• They are a system that contains all the biotic and abiotic factors in an

  area

• They are a group of organisms with similar characteristics that are able

  to reproduce with each other to produce offspring.

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

When organisms move out of the population, this is known as

• emigration

• abandonment

• immigration

• succession

Largest number of individuals of a population that the environment can support...  

• carrying capacity

• population crash

• lag phase

• mutualism

When a population thrives, it means that-

• the number of organisms is decreasing.

• it is growing strong and reproducing.

• the number of organisms is increasing.

• the number of organisms stays the same.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS4-4

If the number of births is greater than the number of deaths in a population, what will happen to the growth of the population?

• It will increase.

• It will decrease.

• It will stay the same.

• It will fluctuate.

Tags

NGSS.MS-LS2-4