N5 Biology - Unit 3 (Life on Earth)

The role an organism plays within its community is called its...

• habitat

• niche

• competition

• biodiversity

Which of the following is the correct definition of an 'ecosystem'?

• The role an organism plays within its community.

• The different organisms living within a given area.

• The variety of organisms living in a given area.

• All the living organisms in their habitat and the non-living components with which they interact.

Which of the following is the correct definition of a 'population'?

• The number of one species in a given area.

• The number of living organisms in a given area.

• The variety of living things in a given area.

• The role an organism plays in a given area.

Which of the following is the correct definition of a 'community'?

• The number of one species in a given area.

• The number of living organisms in a given area.

• The variety of living things in a given area.

• The role an organism plays in a given area.

What word is used to describe an organism which makes its own food?

What would most likely happen to the snails and hawks if the caterpillars were killed by a farmer using pesticides?

• The snails would decrease and the hawks would decrease.

• The snails would decrease and the hawks would increase.

• The snails would increase and the hawks would stay the same.

• The snails would stay the same and the hawks would decrease

What type of competition is observed in the investigation in the diagram?

Name a source plants might compete for.

Which type of competition is most intense?

• Intraspecific

• Interspecific

Which of the following is an example of an abiotic factor?

• Disease

• Temperature

• Predation

• Food Availability