Organisms and Environment Key words

Question 1

Food Web

Answer 1

Shows how food chains in an ecosystem are linked

Question 2

Food Chain

Answer 2

Part of a food web, starting with a producer, ending with a top predator

Question 3

Ecosystem

Answer 3

The living things in a given area and their non-living environment

Question 4

Environment

Answer 4

The surrounding air, water and soil where an organism lives

Question 5

Population

Answer 5

A group of the same species living in the same area

Question 6

Producer

Answer 6

Green plant or algae that makes it own food from sunlight using photosynthesis

Question 7

Consumer

Answer 7

Animal that eats other animals or plants

Question 8

Decomposer

Answer 8

Organism that breaks down dead plant and animal material so nutrients can be recycled back into the soil or the water

Question 9

Species

Answer 9

A group of living things that have more in common with each other than with other groups

Question 10

Natural Selection

Answer 10

The process by which species change over time in response to environmental change and competition for resources

Question 11

Extinct

Answer 11

When no more individuals of a species remain

Question 12

Biodiversity

Answer 12

The variety of living things. It is measured as the differences between individuals of the same species, or the number of different species in an ecosystem

Question 13

Competition

Answer 13

When two or more living things struggle against each other to get the same resource

Question 14

Evolution

Answer 14

The theory that the animal and plant species living today descended from species that existed in the past

Question 15

Variation

Answer 15

The differences within and between species

Question 16

Continuous variation

Answer 16

Where differences between living things can have any numerical value

Question 17

Discontinuous variation

Answer 17

Where differences between living things can only be grouped into categories