CSEC Biology - 18 Population - Community - Survival

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What is a population ?

• Disturbance has removed vegetation but left soil intact.

• The natural birth, growth and development of ecosystem.

• All organisms of a species that live in the same area.

• A community of interacting organisms and their environment.

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.

• individual species of organisms that that live in the same place and do not interact.

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

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

• population, community, ecosystem, organism

• community,

  population, ecosystem, organism

• organism, population, community, ecosystem

• organism, population, ecosystem, community

In determining population of a species you would have to use this type of observation and count all of the species in the ecosystem.

• mark and recapture

• indirect observation

• direct observation

• sampling

In determining population this type of observation would have you

counting nests or signs of an organism.

• indirect

• direct

• sampling

• mark and recapture

When organisms move into a certain population

they are ____________________ .

• emigrating

• populating

• habitating

• immigrating

When an organism leaves a population

they are ____________________

• emigrating

• populating

• habitating

• immigrating

This is something in an environment like food,

water or space that causes a population to decrease.

• predation

• birth rate

• limiting factor

• death rate

The largest population an area can support is called its...

• carrying capacity

• limited factor

• adaptation

• biotic factor

True or False: A community is made up of populations of different species that live in the same place and interact.

• True

• False