Hydrophytes Flashcards
Where do hydrophytes live?
In aquatic habitats
As they live in aquatic organisms, what does this mean?
They don’t need adaptations to reduce water loss but do need adaptations to maximise gas exchange and to cope with their aquatic habitat
What is the first adaptation of hydrophytes?
Stomata on upper surface of floating leaves so are in contact with air
What is the second adaptation of hydrophytes?
Their guard cells are inactive so stomata are permanently open
What is the third adaptation of hydrophytes?
Lack xylem tissue so have flexible leaves and stems which prevents damage from strong water currents
What is the fourth adaptation of hydrophytes?
Large air spaces in leaves, stem and roots providing buoyancy so they float on the surface maximising their exposure to light
What is the fifth adaptation of hydrophytes?
They have a thin or no waxy cuticle to maximise gas exchange and allow water to enter into the leaf
What is the sixth adaptation of hydrophytes?
Have large leaves to increase the SA for photosynthesis and gas exchange
What is the seventh adaptation of hydrophytes?
Have small stems and roots as these will easily be able to absorb sufficient water
What is the eighth adaptation of hydrophytes?
Some have hydrathodes which release water so the transpiration stream doesn’t stop