Lesson 10 - Biodiversity

Question 1

Definition of biodiversity:

Answer 1

The variety of living organisms present in an area

Question 2

Importance of biodiversity?

Answer 2

Essential in maintaining a balanced ecosystem for all organisms, as all species are interconnected.

Question 3

Human activities harming biodiversity?

Answer 3

• Clearing land for housing
• Farming

Question 4

Difference between cold and warm climates?

Answer 4

Cold = little biodiversity
Warm = lots of biodiversity

Question 5

Different levels biodiversity can be measured at?

Answer 5

• Habitat biodiversity
• Genetic biodiversity
• Species biodiversity

Question 6

The greater the habitat biodiversity…

Answer 6

the greater the species variation

Question 7

Species biodiversity details:

Answer 7

• Species richness (the number of different species living in a particular area)
• Species evenness (the number of individuals of each species living in a particular community)

This means that an area can differ in biodiversity even if it has the same number of species.

Question 8

Community definition

Answer 8

All the populations of living organisms in a particular habitat.

Question 9

Genetic variation:

Answer 9

• Refers to the variety of genes that make up a species.

Genes are the same for all breeds of dogs but each has different alleles. This can lead to different phenotypes being exhibited.

Question 10

Genetic variation in relation to diseases?

Answer 10

Genetic variation within a species allows for better adaptations to changing environments. This means that species with genetic variation are more likely to result in individuals who are resistant to disease.

Question 11

Ecosystems:

Answer 11

Communities of organisms interacting with the habitat

Question 12

Haitat:

Answer 12

non-living (abiotic) part

Question 13

Community

Answer 13

the living (biotic) part

• All the populations of living organisms in a particular habitat.

Question 14

Stable community

Answer 14

All species and environmental factors are in balance so that population sizes remain fairly constant.

Question 15

Species diversity:

Answer 15

The number of different species and the number of individuals of each species within any one community.

Question 16

Genetic diversity:

Answer 16

The variety of genes possessed by individuals that make up any one species.

Question 17

Ecosystem diversity:

Answer 17

The range of different habitats within a particular area.