Unit 3 - KA 7 & 8 - Mass Extinction and Threats to Biodiversity

Question 1

Disappearance of many groups of living organisms at the same point in time

Answer 1

Mass extinction

Question 2

Variety and relative abundance of species

Answer 2

Biodiversity

Question 3

Number and frequency of alleles in a population

Answer 3

Genetic diversity

Question 4

Measure of species richness and relative abundance

Answer 4

Species diversity

Question 5

Variety of different ecosystems in a defined area

Answer 5

Ecosystem diversity

Question 6

Numbers of an organism compared with others in a community

Answer 6

Relative abundance

Question 7

Number of different species in a community

Answer 7

Species Richness

Question 8

Inability of a species to evolve due to lack of genetic diversity

Answer 8

Bottleneck effect

Question 9

Very small area of isolated habitat

Answer 9

Habitat fragmentation

Question 10

Link between pieces of habitat in which species can feed, mate and pass through

Answer 10

Habitat corridor

Question 11

Species that has been brought by humans from one geographical location to another

Answer 11

Intorduced species

Question 12

Introduced species that has taken a place in the wild community

Answer 12

Naturalised species

Question 13

Introduced species that has become naturalised in and then harmful to its community

Answer 13

Invasive species

Question 14

Changes in long term weather patterns brought about by changes in the temperature of the Earth

Answer 14

Climate Change

Question 15

Species adapted to the edges of habitats

Answer 15

Edge species