Classification and biodiversity (New) Flashcards
What 2 groups do we use to group PLANTS?
flowering and non flowering
How do we group ANIMALS into groups?
- Vertebrates - have a backbone
- Invertebrates - do not have a backbone
How do you sort a species?
Kingdom, phylum, class, order, family, genus and species
Why are scientific names used?
As they are universally understood
How do organisms (animals) enable themselves to survive in the wild
- Morphological adaptations (behaviour)
- behavioural adaptations
What do ANIMALS compete for?
food , territory and mates
What do PLANTS compete for?
- light
- space
- water
- minerals from the soil
How is a size of a POPULATION changed?
- Predation
- Pollution
- Disease
What is INTERSPECIFIC competition?
competition between different species
What is INTRASPECIFIC competition?
competition between members of the same species
What is biodiversity?
the variety of different species and numbers of individuals within those species in an area
Why is biodiversity important?
as it provides
- food
- industrial materials
- new medicines
- enhanced human well being
How can biodiversity and endangered be protected?
- captive breeding programmes
- national parks
- seed/ sperm banks
- local biodiversity action plans.
Why are fisherman against legislation of fishing quotas?
- less fish being caught
- killing other fish from increase of ……
Why are fisherman against legislation of fishing quotas?
- less fish being caught
- killing other fish from increase of ……
How do you use a quadrat?
- Randomly throw a quadrat.
- Count the different species and
the number of each in each
quadrat. - Take a mean number of each
species of plants from all the
quadrats collected. - Multiply up to estimate how many
in the whole area
Why do you need to collect sufficient data?
To give a more valid estimate of the number of plants in the area
What assumptions do you make using the capture/ recapture technique?
- no death
- immigration or emigration
- marking technique does not affect chances of survival.
What is an alien species?
An organism introduced into a country in which it does not normally live.
What could happens to an alien species?
It could become INVASIVE (An alien organism that has had a negative effect on the
native species)
What is biological control?
The use of one organism to control the population size of another
species by eating it. This is often the use of a predator species to control the number of a
prey species that have become pests
What are the issues with BILOGICAL CONTROL on pests?
- does not completely eradicate the pest, only bring the population down to acceptable levels
- there is a delay between introducing the predator and a reduction in the pest
