Biodiversity Flashcards
Define species
a group of similar organisms that can breed to make fertile offspring
What are the benefits of a binomial system
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What are 5 reasons why courtship behaviour important
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Whats the difference between classification and taxonomy
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What are the 7 taxonomic ranks in order
K - kingdom P - phylum C - class O - order F - family G - genus S - species
What do phylogenetic trees show
how closely related and newly related it is to a common ancestor
What is meant by species richness
number of different species represented in an community
How do you calculate species diversity
N(N-1) N = number of all species
Σn(n-1) n = number of each species
Why do rainforests have high diversity
large environment with many habitats
What are the impacts of modern agriculture on biodiversity
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How can farmers help maintain biodiversity
maintaining niches for organisms
How can DNA be used to compare species
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How can amino acid sequences be used to compare species
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Why do observable characteristics have limitations on comparing species
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How can mRNA be used to compare species
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What is a immunological study
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What is meant by sampling bias
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What is meant by chance
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How should data be sampled to reduce bias and chance
-large sample size - reduce effect of anomalies
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How is random sampling carried out
- divide the study area into a grid of numbered lines
- obtain coordinates using a random number generator
- take samples from the coordinates
What is meant be normal distribution
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What is the Median, Mean and Mode
Median -
Mean -
Mode -
What is the standard deviation
the range of values either side of the mean
What does it mean if the standard deviations overlap
there is no significant difference between the variables
Why is the standard deviation a better measurement than range
standard deviation takes into account the variable data therefore influences can be made
