10. biodiversity Flashcards
How does courtship maintain successful mating
Mates are of the same species (unique routine)
Synchronises behaviour (mates are mature and in season)
How does courtship confirm survival of offspring
Pair bond (some offspring require two parents)
Mate is strong and healthy, desirable traits passed down
What is an organisms binomial name made up of?
Genus + species
(Genus has a cap)
Taxonomy is described as…
Hierarchal
Non overlapping
Universal
Describe phylogenetic classification
Identifying how closely related organisms are by their common ancestors
What are the three ways organisms can be classified
DNA/ mRNA sequences
Amino acid sequences
Phylogenetically
(+ observable characteristics)
What is species diversity
Number of species + how many individuals in each species
What is species richness
Number of species in a specific area at a specific time
What is ecosystem diversity
Range of habitats in an area
Describe 4 ways that farming limits biodiversity
- Selective breeding, less diversity of genes
- Destruction of hedgerows
- monocultures, only one species is grown
- pond/wetlands are drained and filled
- over-grazing
What does the two N’s in the index of diversity equation mean?
N = total number of organisms in all species
n(lowercase) = number of organisms in a particular species
What is the index of diversity
Describes the relationship between the number of species (species richness) and how many are in each species (population)
What is courtship behaviour?
a sequence of actions, unique to species, identify members of their own species to reproduce with.
Why do some species have similar courtship behaviours?
species are closely related.
Name all the taxa groups
Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species
