WJEC GCSE Biology Unit 2 Flashcards
What are the two major groups of living organisms?
Plants and Animals
Plants - Flowering and Non-Flowering
Animals - Vertebrates and Invertebrates
What is the full order of the classification groups?
Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species
What are the 2 Domain groups?
Largest group, Eukarya (which contains 4 of the 5 kingdoms), and Bacteria and Archaea
What are the names of the 5 Kingdoms?
Animals
Plants
Fungi
Single celled organisms
Bacteria
What 2 classification groups are the scientific names derived from?
Genus and Species
What are 2 advantages of scientific names?
- Universal language, everyone understands it
- Prevents mix ups, every animal has a unique scientific name
What are the 2 types of adaptation?
- Morphological
- Behavioural
Define morphological adaptions
Adaptions that change physical things to better suit the environment like Fennec foxes who live in hot climates that have large ears to radiate heat away from their bodies.
Define behavioural adaptions
Adaptions that change behaviours to better suit the environment like how the Fennec fox is mostly nocturnal (awake at night) and burrows under the sand to avoid the heat of the day in the desert.
What do animals compete for?
- Food
- Territory
- Mates
What do plants compete for?
- Light
- Water
- Minerals
What is Interspecific competition?
Interspecific competition is competition between different species.
What is Intraspecific competition?
Intraspecific competition is competition between members of the same
species.
Other than competition what affects a populations size?
- Predation
- Pollution
- Disease
What is biodiversity a measure of?
- The variety of different species
- The numbers of each of those species in a particular area.
Why is biodiversity important?
It is important as it provides:
- food and potential foods
- industrial materials
- new medicines
- and enhances human well-being.
How can biodiversity be preserved?
Biodiversity and endangered species can be conserved and protected by:
- Convention on International
Trade in Endangered Species
- Sites of Special Scientific
Interest
- captive breeding programmes
- national parks
- seed/ sperm banks
- local biodiversity action plans.
How do you measure biodiversity?
To measure the biodiversity of plants in
an area or to investigate the different
distribution of plants we can use a
quadrat.
It is important to take a random
sample of an area to avoid collecting
biased data.
A larger sample will give a valid
estimate of the number of plants in the
area.
What is the name of the method of
