Bio 10 - Biodiversity Flashcards
(18 cards)
What do members of a species all have in common?
They are capable of breeding to produce living, fertile offspring
What is a species?
A group of organisms that are similar to each other bur different from members of other species
What is classification?
The Grouping of species
What is taxonomy?
The practice of biological classification
What are the two type of classification?
- Artificial Classification
- Natural classification
What is artificial classification?
Divides organisms by physical characteristics
What is natural classification?
Based upon the evolutionary relationships. Arranges groups into a hierarchy
What is the problem with artificial classification?
Eg. Just because animals have the same number of legs doesn’t mean they are the same
What is the largest taxonomy group?
Domain
List the taxonomy groups in order.
Domain, Kingdom, Phylum, Classes, Orders, Families, Genera and Species.
What is Phylogeny?
The evolutionary relationship between organisms. It reflects the evolutionary tree that led to the organism.
What is species diversity?
The number of different species and the number of individuals of each species within one community
What is genetic diversity?
The variety of genes possessed by individuals that make up any one species
What is ecosystem diversity?
The range of different habitats within a particular area.
What are the two components of species diversity?
- Number of different species in given area
- The proportion of the community that is made up of an individual species
How do humans reduce species diversity control agricultural ecosystems
- Farmers select crops that are more productive so the frequency of alleles are reduced
- Crops sprayed with pesticide and manmade fertiliser
What’s the impact of deforestation?
- Forests contain many varied and different habitats high in species diversity.
- Permanent clearing of the forest leads to lots of habitats and in turn loss of biodiversity
What does courtship behaviour enable animals to do?
- Recognise members of their own species
- identify a mate that is capable of breeding
- form a pair bond
- synchronise mating
- become able to breed
