7. components of biodiversity

Question 1

what are the 3 components of biodiversity

Answer 1

-genetic diversity
-species diversity
-ecosystem diversity

Question 2

describe genetic diversity

Answer 2

The number and frequency of all the alleles within a population.

If one population of a species dies out then the species may have lost some of its genetic diversity, and this may limit its ability to adapt to changing conditions

Question 3

describe species diveristy

Answer 3

Comprises the number of different species in an ecosystem (the species richness) and the proportion of each species in the ecosystem (the relative abundance).

A community with a dominant species has a lower species diversity than one with the same species richness but no particularly dominant species

Question 4

describe ecosystem diveristy

Answer 4

Refers to the number of distinct ecosystems within a defined area

Question 5

Explain why the death of one population in an area may limit the population’s ability to adapt to changing conditions

Answer 5

if one population dies out then the species may lose some of it’s genetic diversity which will make it harder to adapt to changing conditions

Question 6

describe species richness

Answer 6

Species richness means the number of different species in one area.

Question 7

describe species relative abudance

Answer 7

refers to the proportion of each species in an ecosystem