SB9a: Ecosystems

Question 1

Abundance

Answer 1

A measure of how common something is.

Question 2

Community

Answer 2

All the different organisms living and interacting with one another in a particular area.

Question 3

Ecosystem

Answer 3

An area in which all the living organisms and all the non-living physical factors in an area form a stable relationship that needs no input from outside the area to remain stable.

Question 4

Food web

Answer 4

A diagram of interlinked food chains. It shows how the feeding relationships in a community are interdependent.

Question 5

Habitat

Answer 5

The place in which an organism lives, e.g. woodland or sea shore.

Question 6

Interdependent

Answer 6

When organisms in an area need each other for resources, e.g. for food and shelter.

Question 7

Population

Answer 7

A group of one species living in the same area.

Question 8

Quadrat

Answer 8

A square frame of known area, such as 1 m2, that is placed on the ground to get a sample of the organisms living in a small area.

Question 9

Resources

Answer 9

Something that an organism needs to stay alive such as food, water and space.

Question 10

Sample

Answer 10

A small portion of an area or population.