Biology, A-Level: Biodiversity Exam

Biology, A-Level: Biodiversity Exam
With answers

What are the 3 types of biodiversity? - answer-1. Species
2. Genetic
3. Ecosystem

Explain the following types of biodiversity
- Species
- Genetic
- Ecosystem - answer-- Species diversity: The number of different species and the
number of individuals of each species within any one community
- Genetic diversity: The variety of genes possessed by individuals that make up any one
species
- Ecosystem: The range of different habitats within a particular area

What can species diversity be used to measure?
- What are the two components of species diversity? - answer-- Can be used to
measure biodiversity
- Two components:
-Number of different species in a given area (species richness)
- The proportion of the community that is made up of an individual species (abundance)

Species found Number in habitat X Number in habitat Y
A 10 3
B 10 5
C 10 2
D 10 36
E 10 4
No. of species 5 5
No. of individuals 50 50

Which species has more biodiversity? - answer-The species in habitat X

d= N(N-1)/ ∑n(n-1)


What does this formula work out?
What do each of the letters stand for? - answer-This formula measures the species
diversity (index)
- d = species diversity index
N= total number of organisms of all species