2414906
Description
Mind Map by danieladkin, updated more than 1 year ago
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Created by danieladkin
over 9 years ago
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Adaptations of flowering plants
- Xerophytes
- Low water availability
- Prevent waterloss
- Rolled leaves
- Reduces leaf area from which
transpiration can occur
- Reduces leaf area from which
transpiration can occur
- Sunken stomata
- Reduces water potential
gradient between surface of the
leaf and the atmosphere
- Reduces rate of diffusion of water
- Reduces rate of diffusion of water
- Reduces water potential
gradient between surface of the
leaf and the atmosphere
- Thick cuticle
- Over leaf surface to
reduce rate of cuticular
transpiration
- Over leaf surface to
reduce rate of cuticular
transpiration
- Hairs
- Trap water vapour and reduce
water potential gradient
- Trap water vapour and reduce
water potential gradient
- Rolled leaves
- Marram grass
- Sand dune habitat
- Sand dune habitat
- Low water availability
- Mesophytes
- Shed leaves before onset of winter
- Aerial parts of non woody plants die
off and due to frost/cold winds.
Underground parts survive
- Most annual mesophytes (flower,
seed and die in 1 year) survive winter
as dormant seeds
- Rose
- Survive unfavourable times of year
- Shed leaves before onset of winter
- Hydrophytes
- Water lily
- Poorly developed xylem
- Water is supportive medium
(very little lignified tissue)
- Submerged/partially
submerged under water
- Upward facing stomata (on top of leaf)
- Little/no cuticle
- Large air spaces in stems and leaves (lots of
CO2 and O2 available when submerged)
- Water lily
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