unit 3 KA7 - components of biodiversity

Question 1

what are the components of biodiversity

Answer 1

• genetic diversity
• species diversity
• ecosystem diversity

Question 2

what is meant by genetic diversity

Answer 2

this is the number and frequency of all the alleles within a population

Question 3

what may happen to genetic diversity if one population of a species dies out

Answer 3

the species may have lost some of its genetic diversity, and this may limit its ability to adapt to changing conditions

Question 4

what is species diversity

Answer 4

compromises the number of different species in an ecosystem and the proportion of each species in the ecosystem

Question 5

what is meant by species richness

Answer 5

this is the number of different species in an ecosystem

Question 6

what is the relative abundance

Answer 6

the proportion of each species in an ecosystem

Question 7

does a community with a dominant species have a higher or lower species diversity than a community that has the same species richness but no particularly dominant species

Answer 7

lower

Question 8

what is ecosystem diversity

Answer 8

this refers to the number of distinct ecosystems within a defined area