Biology 2.1

Cards (41)

  • What is classification
    The sorting of organisms which have similar featurs and characteristic into groups
  • What are the two prodecures classification can occur by
    Morphological characteristics
    dna analysis
  • What is morphological characteristics
    Using a structural features for grouping
  • What is dna analysis
    Looking at similarities in dna
  • 5 kingdom classifications
    Animals
    plants
    fungi
    bacteria
    single celled organisms
  • 7 levels of classification
    Kingdom
    phylum
    class
    order
    family
    genus
    species
  • Two broad groups of plants
    Flowering and non flowering
  • Two broad groups of animals
    vetervreactes (with backbone)
    invertebrates (without backbone)
  • Why are scientific names important for organisms
    This is an universal name used acrosss difreent countries to avoid confusion
  • is the genus name first or second
    First
  • Is the species name first or second
    Second
  • organims have morphological (shape) and behavioural adaptions to enable them to survive in their environment
  • Why are adaptions important
    Means organisms are more suited to their environment and will help them survive
  • What are morphological adaptions
    Ear lengrh (area of heat loss depending on their surface area) (large ears to loose heat )
    coat colour (camouflaged with their environment for protection against predetors)
    body mass (surface area: volume ratios( less body fat and thinner coat )
  • What are behaviourAl adaptions
    If organisms modify their behaviour to help them survive this is considered a behavourable adaption
    hunting as a pack
    migration
  • What does population size mea.
    How many of one to of plant or animal there is in a given ecosystem
  • What affects size of animal population
    food and water
    number of predators
    disease
    population
  • What affects side of plant population
    Light, water, or minerlas
    number of herbivores
    disease
    population
  • what do animals compete for
    Food
    space
    mates
  • What do plants compete for
    Sunlight
    space
    nutrients
  • What are the 2 different types of competition in an ecosystem
    intraspecific
    interspecofic
  • What is interspecific competition

    If organisms from different species compete
  • What is intraspecific competition

    If organisms from the same species compete
  • What is the definition of biodiversity
    Variety of different species and number of individuals within each specie
  • Why is biodiversity important
    Provide food
    medicine
    building materials
  • Humans are causing biodiversity to decrease which is a massive problem
  • This happens because the human population is increasing
  • Solutions to the reduction of biodiversity
    Cites
    sssi
    captive breeding programs
    national patks
    seed/sperm banks
    local biodiversity action plans
  • What tool could be used to record the adundance of diffrent plant species in a habitat
    Quadrants
  • Why does the distribution of quadrants need to be random
    To prevent biased results
  • What do transects measure
    The change in the distribution of organisms in an area
  • What is a capture recapture
    Method used to estimate the population size of a partial animal specie
  • What are invasive alien species
    An organism that has been accidently brought to a me area and has become a problem/ cause harm
  • Inasive species are species who are introduced to an area both on purpose and by accident
  • Threatens native species and biological diversity
  • Invasive species may grow faster than the native species and upset the natural ecosystem
  • Native species may not be abel to compete with them
  • What is biological control
    A pest population is normally regulated by its natural predators and parasites
  • By releasing a natural predeotr into the crop growing area the number of pests can be reduced
  • 2 advantages of biological control
    the biological control agent is usually specific to a particular pest.
    Once the predator is established, there is no need to re-introduce it at a later date.