10 - Biodiversity

Question 1

species

Answer 1

a group of individuals which are able to interbreed to produce living, fertile offspring

Question 2

order of taxa

Answer 2

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species

Question 3

role of courtship in species recognition

Answer 3

recognise members of their own species (to breed with and produce fertile species)
identify a mate capable of breeding (must be fertile)
form a pair bond that will lead to successful mating and raising of offspring
synchronise mating

Question 4

species richness

Answer 4

measure of the number of different species in a community

Question 5

index of diversity

Answer 5

describes relationship between the number of species in a community and the number of individuals in each species

Question 6

techniques which have removed habitats and reduced species diversity

Answer 6

removal of hedgerows
creating monocultures
filling in ponds, marshes and wetlands
over-grazing of land (preventing regeneration of woodland)
use of pesticides and inorganic fertilisers

Question 7

sampling bias

Answer 7

unrepresentative choices are made, either deliberately or unknowingly, making the results unreliable

Question 8

chance

Answer 8

even if bias is avoided, by chance the sample may be unrepresnetative