B1.4 - Interdependence and Adaptation

B1.4 - Interdependence and Adaptation

1. Plants

   • Plants spread their leaves for photosynthesis
     • Plants absorb nutrients from the ground
       • Plants absorb water from their roots

2. Animals

   • Animals need space to breed/compete for a mate and to hunt in
     • Carnivores compete for prey whereas herbivores compete for vegetation
       • Animals need water to survive

3. Population

   • The amount of a species living in an area

4. Adaptations

   • Special features/behaviour an organism has to help it survive in its enviroment
   • Some plants developed thorns to stop animals eating them
     • Some organisms develop poisins/warning colours to deter prey

5. Extremophiles

   • Organisms adapted to live in areas with a high salt concentration/high pressure and temperature

6. Animal Adaptation

   • Changes to surface area
   • Thickness of insulating coat
   • Amount of body fat
   • Camouflage

7. Polar Bear

   • Nostrils that close underwater
     • Webbed feet to aid swimming
       • Wide paws to grip the ice
         • White fur for camouflage
           • Thick layer of fat under skin for warmth

8. Camel

   • Long Eyelashes to keep out sand
     • Nostrils that close to keep out sand
       • Wide feet to prevent sinking in sand
       • Hump stores fat for energy
         • Thick lips to eat prickly desert plants

9. Cacti

   • Needles instead of leaves to reduce surface area avalable for water loss
     • Extensive root system to take in water
       • Thick stem to store water