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Duplicate of Topic 4 AQA Biology AS LEVEL Flashcards | StudBud
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Duplicate of Topic 4 AQA Biology AS LEVEL
Duplicate of Topic 4 AQA Biology AS LEVEL
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A AS BIOLOGY quiz on Biodiversity and genetic diversity topics AQA.
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1
What happens the sd and mean in stabilising selection?
Mean stays the same sd decreases
Mean changes sd changes
Mean increases sd stays the same
Mean increases sd decreases
2
What is genetic diversity
The number of different alleles of genes in a population
The variation in a population
The number of different allies in a population
The differences in a population
3
What is courtship behaviour?
Behaviours between males and females that can lead to mating
Females singing and showing off bright colours
Male behaviour that leads to mating
Any behaviour that attracts the opposite sex
4
How does planting hedges affect biodiversity?
More herbivores
Increases types of plant species
More food sources
Increased number of animals
5
Why is index diversity better than species richness to measure biodiversity?
Index diversity is taking into account all species
Species richness only measures number of species present
Species richness counts all individuals in each species
Index diversity has more calculations so more accurate
6
What does the 'N' stand for in the equation?
Total number of individuals of each species
Total number of all species in a community
Total number of organisms of one species
Total number of organisms of all species
7
Is this an example of directional or stabilising selection?
Directional
Stabalising
8
What happens to the mean and s.d in directional selection?
Mean increases sd decreases
Mean increases sd increases
Mean changes sd stays the same
They both stay the same
9
What does this formula tell you?
Influx of Diversity
Index of Biology
Index of Divergence
Index of Diversity
10
Is selection that favours average individuals example of directional or stabilising selection.
Stabilising
Directional
11
What does 'n' stand for in the equation?
Total number of organisms for all species
Total number of organisms of each species
Total number of individuals in all species
Total number of species
12
Define species
Organisms that can reproduce to produce infertile offspring
Species that can reproduce to produce infertile offspring
Organisms that can reproduce to produce fertile offspring
Organisms that can reproduce to produce fur offspring
13
What is species richness?
No. of different species in a community
No. of different animals
No. of individuals in a community
No. of species in a community
