11.1 Biodiversity Flashcards Preview

A level Biology OCR A > 11.1 Biodiversity > Flashcards

Flashcards in 11.1 Biodiversity Deck (9)
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1
Q

What is biodiversity?

A

variety of living organisms

present in an area

2
Q

What are the different components of biodiversity/what factors are taken into account?

A
  • HABITAT BIODIVERSITY
    • Number of different habitats in a given area
  • SPECIES BIODIVERSITY
    • Species Richness - number of different species
    • Species Evenness - relative abundance of species
  • GENETIC BIODIVERSITY
    • Variety of alleles making up a species
3
Q

What is habitat biodiversity?

A

number of different habitats

in a given area

4
Q

What are the components of species biodiversity?

A

Species evenness

Species richness

5
Q

What is species richness?

A

number of different types of species

6
Q

What is species evenness?

A

relative populations of different species

7
Q

What is genetic biodiversity?

A

variety of alleles within a species

8
Q

What is an advantage of having a high genetic biodiversity?

A

increased intraspecific variation,

so change in environment is unlikely to affect every individual,

so less likely for species to become extinct

9
Q

What is an advantage of high biodiversity?

A

ecosystem more stable

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