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Genetic information, variation and relationships between organisms

Genetic information, variation and relationships between organisms

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Question 14
a.

Define the biological term community.

[2]
b.

Which statement correctly describes the species richness of a community?

  • The total number of individual organisms of all species in a habitat
  • The number of different species in a community
  • The proportion of each species relative to the total number of individuals
  • The variety of abiotic factors present within a community
[1]
c.

An agricultural researcher compared a heavily-fertilized monoculture ryegrass pasture to a restored wildflower meadow. Both areas were found to contain exactly 15 species of beetles.

Explain why calculating an index of diversity is a more useful measure of biodiversity than recording only species richness in this comparison.

[2]
Markscheme

Genetic information, variation and relationships between organisms Questions

  1. A Level
  2. /Biology
  3. /Genetic information, variation and relationships between organisms

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