3.1 Biodiversity

Question 1

Types of diversity

Answer 1

Species genetic and habitat

Question 2

How do 3 types of diversity change when succession occurs

Answer 2

All increase

Question 3

Benefit of biodiversity for ecosystems

Answer 3

Resilience
Deep roots bring nutrients to the surface for other plants

Question 4

What is species diversity

Answer 4

Product of no. of species and evenness of species (proportions)

Question 5

When might high biodiversity not mean that the ecosystem is healthy?

Answer 5

Ecosystems can have high biodiversity during fragmentation of the habitat
Or during succession when pioneer species are invading fast

Question 6

Explain simpson’s diversity index formula

Answer 6

N(N-1)/(n1(n1-1)*n2(n2-1)…)
Where N is total no. or organisms in an ecosystem and n is number of organisms per species

Question 7

What is a hotspot

Answer 7

Area of high biodiversity under threat of human activities

Question 8

What are endemic species

Answer 8

Species only found in one region in the world

Question 9

What is habitat diversity

Answer 9

Range of different habitats in a given ecosystem or biome

Question 10

What is genetic diversity

Answer 10

Degree of genetic variation within the population of a species