competition, adaptations and food chains

Cards (24)

  • organisms compete with other species for the same resources
  • In each community, species depend on each other for things like food, shelter, pollination and seed dispersal. What is this called?
    Interdependence
  • Interdependence means that one change can effect the whole system.
  • A change in an environment could be an increase or decrease in an abiotic or biotic factor.
  • Changes in aboitic and biotic factors can effect size of populations in a community.
  • adaptations allow organisms to survive
  • The features or characteristics of an organism that allow them to survive in their environment are called what?
    Adaptations
  • Name the 3 types of adaptations.
    Structural
    behavioural
    functional
  • Give 3 examples of structural adaptations
    fur colour
    fat layers
    large surface area to volume ratio
  • Give an example of a behavioural adaptation.
    Migration
  • Give 2 examples of functional adaptations
    conserving water
    hibernating (lowering metabolism)
  • Some microorganisms are extremophiles
  • What is an extremophile?
    An organism adapted to live in very extreme conditions
  • Give examples of extreme conditions
    high temperatures
    high salt concentration
    high pressures
  • Food chains show what is eaten by what in an ecosystem
  • Food chains always start with a what?
    producer
  • Producers make their own food (glucose) using what?
    energy from the sun (photosynthesis)
  • What are producers typically?
    algae or green plants
  • What is biomass?
    mass of living material. can be thought of as energy stored in a plant
  • energy is transferred through living organisms when organisms eat other organisms
  • populations of prey and predators go in cycles
  • consumers that hurt and kill other animals are called predators
  • If the population of prey increases, so does the predatorss
  • As population of predators increases, population of prey decreases