Unit 3 Key Area 7 Flashcards

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1
Q

State the three components of biodiversity?

A
  • genetic diversity
  • species diversity
  • ecosystem diversity
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2
Q

Define the term genetic diversity in relation to biodiversity?

A

Genetic diversity is the number and frequency of alleles within a population

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3
Q

Define the terms species diversity in relation to biodiversity?

A

Species diversity is comprised of the number of different species in an ecosystem (species richness). And the proportion of each species in the ecosystem.

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4
Q

Define ecosystem diversity in relation to biodiversity?

A

Ecosystem diversity refers to the number of distinct ecosystems within a defined area

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5
Q

State the effect of a population of a species within an ecosystem completely dying out?

A

When a population of a species within an ecosystem dies out this causes a loss in genetic diversity. This loss in genetic diversity may limit the species’ ability to adapt to changing conditions

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6
Q

What can be said about the biodiversity of an ecosystem that has a dominant species?

A

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

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