Biodiversity

Question 1

Biodiversity

Answer 1

The variety of all different living organisms on Earth, or within an ecosystem

Question 2

Species diversity

Answer 2

The number of different species and the number of individuals of each in a community

Question 3

Genetic diversity

Answer 3

The amount of different alleles possessed by the individuals within a given species population

Question 4

Ecosystem diversity

Answer 4

The range of different habitats

Question 5

Species richness

Answer 5

A type of species diversity and it is a a measure of the amount of different species in a community. (DOES NOT MEASURE AMOUNT OF INDIVIDUALS IN EACH SPECIES)

Question 6

Index diversity

Answer 6

Equation which takes in to account the proportion of individuals in each species (Get given in exam)

Question 7

Impacts of agriculture

Answer 7

Ecosystem controlled by humans = Only species with desirable characteristics
Reduction in genetic diversity
Less land available only for desirable species
Stronger competition
Reduction in species diversity

Question 8

How farmers affect species diversity

Answer 8

Removing hedgerows
Pesticides
Overgrazing
Draining wetlands

Question 9

How farmers can maintain biodiversity

Answer 9

Maintaining hedges - Allow habitats for species
Crop rotation - Minerals in soil have time to replenish
Planting native trees - Provides habitats
Organic fertiliser
Wet corners of field

Question 10

P values

Answer 10

The probability / significance that a difference in distribution is due to change.
e.g
if p > 0.05 the difference in distriburtion is probably due to chance as probability due to change is greater than 5%
if p < 0.05 it is unlikely due to chance
p = probability