Key Area 1

Question 0

List three examples of biomes

Answer 0

Forests, deserts, grasslands, tundra, aquatic

Question 1

What is a biome?

Answer 1

A geographical region of a planet that contains distinctive flora and fauna with a distinctive climate

Question 2

Which abiotic factors affect the distribution of biomes

Answer 2

Temperature and rainfall

Question 3

What is meant by flora

Answer 3

Characteristic types of plant in a biome

Question 4

What is meant by fauna?

Answer 4

Characteristic animals in a biome

Question 5

What is meant by “ecosystem”?

Answer 5

All the organisms living in a particular habitat (the living and the non-living things)

Question 6

What is meant by “population”?

Answer 6

Total number of organisms of ONE species in an ecosystem

Question 7

What is meant by “community”?

Answer 7

All the living things in an ecosystem

Question 8

What is meant by “habitat”?

Answer 8

The place were the organisms live

Question 9

What is an abiotic factor?

Answer 9

Non-living components of an ecosystem that can affect the distribution of an organism e.g. Temperature, rainfall, pH, light intensity

Question 10

What is meant by “niche”?

Answer 10

The role an organism plays with in a community

Question 11

What is a “biotic factor”?

Answer 11

Living factors which affect the distribution of organisms

Question 12

Give examples of biotic factors

Answer 12

Predation, competition, grazing and disease.

Question 13

Give examples of ways in which humans over exploit the environment

Answer 13

Over-hunting, over-fishing, over-grazing

Question 14

Give examples of habitat destruction

Answer 14

Desertification, deforestation

Question 15

Give examples of pollution

Answer 15

Water pollution due to litter.
Water pollution due to organic waste.
Air pollution

Question 16

What is an indicator species?

Answer 16

Is a species that gives information about levels of pollution in an ecosystem based on its presence or absence. e.g. Lichen and sulphur dioxide levels