So what will a well adapted organism be able to do?
- find food and photosynthesise
- find enough water
- gather enough nutrients
- defend itself from predators and disease
- survive in all conditions of its environment
- respond to changes in environment
- have enough energy to reproduce
Behavioural adaptation: aspects of behaviour that permit survival
anatomical: Structural adaptations
Physiological: ensures the correct functioning of cell processes
EXAMPLE OF ADAPTATION: Xerophytic plants
Behavioural adaptations include:
- close stomata when little water is available
- fold or roll leaves
- some open stomata so water does leave, the leaves shrink so reducing the surface area
- plants absorbs water when its available and it fills the cells for years
anatomical adaptations:
- roots spread over large area
- long roots down
- small surface area for evaporation
- waxy leaves
- sunken stomata
Cacti are good examples of Xerophytic plants)
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