stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Topic 4 AQA Biology AS LEVEL Flashcards | StudBud
Explore
/
Topic 4 AQA Biology AS LEVEL
Topic 4 AQA Biology AS LEVEL
13 terms
·
StudBud Administration
·
1,320 plays
A AS BIOLOGY quiz on Biodiversity and genetic diversity topics AQA.
Flashcards
13 cards
F
Practice quiz
P
Host live
L
Questions
13
Answers
1
Is this an example of directional or stabilising selection?
Directional
Stabalising
2
Is selection that favours average individuals example of directional or stabilising selection.
Stabilising
Directional
3
What is species richness?
No. of individuals in a community
No. of different species in a community
No. of species in a community
No. of different animals
4
What happens the sd and mean in stabilising selection?
Mean increases sd stays the same
Mean changes sd changes
Mean stays the same sd decreases
Mean increases sd decreases
5
How does planting hedges affect biodiversity?
Increases types of plant species
Increased number of animals
More food sources
More herbivores
6
What is genetic diversity
The differences in a population
The number of different alleles of genes in a population
The number of different allies in a population
The variation in a population
7
Why is index diversity better than species richness to measure biodiversity?
Species richness only measures number of species present
Index diversity has more calculations so more accurate
Species richness counts all individuals in each species
Index diversity is taking into account all species
8
Define species
Species that can reproduce to produce infertile offspring
Organisms that can reproduce to produce fertile offspring
Organisms that can reproduce to produce infertile offspring
Organisms that can reproduce to produce fur offspring
9
What is courtship behaviour?
Any behaviour that attracts the opposite sex
Behaviours between males and females that can lead to mating
Females singing and showing off bright colours
Male behaviour that leads to mating
10
What happens to the mean and s.d in directional selection?
Mean increases sd decreases
They both stay the same
Mean changes sd stays the same
Mean increases sd increases
11
What does 'n' stand for in the equation?
Total number of individuals in all species
Total number of organisms of each species
Total number of species
Total number of organisms for all species
12
What does the 'N' stand for in the equation?
Total number of all species in a community
Total number of organisms of one species
Total number of individuals of each species
Total number of organisms of all species
13
What does this formula tell you?
Index of Divergence
Influx of Diversity
Index of Biology
Index of Diversity
