Hydrophytes

Question 1

Where do hydrophytes live?

Answer 1

In aquatic habitats

Question 2

As they live in aquatic organisms, what does this mean?

Answer 2

They don’t need adaptations to reduce water loss but do need adaptations to maximise gas exchange and to cope with their aquatic habitat

Question 3

What is the first adaptation of hydrophytes?

Answer 3

Stomata on upper surface of floating leaves so are in contact with air

Question 4

What is the second adaptation of hydrophytes?

Answer 4

Their guard cells are inactive so stomata are permanently open

Question 5

What is the third adaptation of hydrophytes?

Answer 5

Lack xylem tissue so have flexible leaves and stems which prevents damage from strong water currents

Question 6

What is the fourth adaptation of hydrophytes?

Answer 6

Large air spaces in leaves, stem and roots providing buoyancy so they float on the surface maximising their exposure to light

Question 7

What is the fifth adaptation of hydrophytes?

Answer 7

They have a thin or no waxy cuticle to maximise gas exchange and allow water to enter into the leaf

Question 8

What is the sixth adaptation of hydrophytes?

Answer 8

Have large leaves to increase the SA for photosynthesis and gas exchange

Question 9

What is the seventh adaptation of hydrophytes?

Answer 9

Have small stems and roots as these will easily be able to absorb sufficient water

Question 10

What is the eighth adaptation of hydrophytes?

Answer 10

Some have hydrathodes which release water so the transpiration stream doesn’t stop