Biodiversity 4B

Question 1

Define biodiversity

Answer 1

Variety of living organisms in a population

Question 2

Define habitat

Answer 2

the place where an organism lives

Question 3

Define community

Answer 3

all the populations of different species in a habitat

Question 4

Define local diversity

Answer 4

considering a variety of different organisms in a small local habitat

Question 5

Define global diversity

Answer 5

considering the variety of species on earth

Question 6

Define species richness

Answer 6

the number of different species in a community

Question 7

index of diversity equation

Answer 7

d = N(N-1)/{n(n-1)
N - total number of organisms of all species
n - total number of organisms of one species
{ -“sum of”

Question 8

How does woodland clearance reduce biodiversity

Answer 8

increases the area of farmland and destroys habitat causing species to die or migrate

Question 9

How does hedgerow removal reduce biodiversity

Answer 9

increases the area of farmland and destroys habitat causing species to die or migrate

Question 10

How do pesticides reduce biodiversity

Answer 10

They directly kill the organisms

Question 11

How do herbicides reduce biodiversity

Answer 11

they reduce the number of organisms that feed on the weeds

Question 12

How does monoculture reduce biodiversity

Answer 12

farmers have fields with only one type of plant, this directly reduces biodiversity and will support fewer organisms

Question 13

Examples of conservation schemes

Answer 13

Giving legal protection to endangered species
Creating protected areas - reducing developments including agricultural developments
The Environment Stewardship Scheme - which encourages farmers to conserve biodiversity