Stuff Need To Know For The Exam Flashcards
How to do serial dilutions
Use a 100cm3 measuring cylinder
Mix 80cm3 of acid and 20cm3 of water
Take 50cm3 of solution and add 50cm3 of water
Repeat dilution for each solution required
Describe range bars
- longer range bar more variability
- if range bars overlap then data is not significant
What is biodiversity
Number of different alleles within a population
The number of different habitats within a ecosystem
The number of different species within an area
Difference between a line and belt transect
Line - plants touching the line
Belt - plants in quadrats around the line
Interrupted and continuous transect
Interupted - using quadrats at regular intervals
Continous - quadrat beside the line and move it along the line
Longworth trap
C1 - number captured first
C2 - number captured second
C3 number captured second that had already been caught the first time
C1 x c2/C3
What is polymorphic gene loci
Having more than one allele at a loucs
Number of polymorphic gene loci/ total number of loci
Simpsons diversity
1-[sum of (n/N)2]
Species richness and species evenness
Spiece richness - a meausre of how number of species in the habitats
Species evenness - the abundace of individuals of each species in the habitat
Both needed to reval dominance
Reasons to maintain biodiversity
Impact on food chain Right to exist Preserving species for future generations Asthetic reasons - beautiful to look at Tourism
Importance of sampling
Provide an estimate
Hard to measure the whole of the population
Representative of the area
Advantages of conserving plant species as seeds
Small Transprot easier Collected with minimal damage Store greater genetic allele Remain viable for long periods Less susceptible to disease Take up little space
Whats wrong with estimates
Species might have become extinct
Habitats inaccessible
Didficult to ditinguish between species
Evolutipn is on going and new species are being formed
EIA
Size of development
Idea of environmental sensitivity
Potential damage
Potential strategies to minimise impact
Order
Domain Kingdom Phylum Class Order Family Genus Species
