SB6e

Question 1

State the adaptations for a aquatic environment.

Answer 1

 Large leaves – higher sunlight absorption.

 Waxy coat on leaves – allows them to stay
dry and float on water.

 Flexible stems – allows for movement with
currents.

 Flower on the surface – fertilisation.

 Floating seeds – seed dispersal.

Question 2

State the adaptations for a extremely cold environment.

Answer 2

 Lose their leaves in winter to:
o minimise water loss since the water in
the soil might be frozen.
o conserve heat.

 Needle-shaped leaves with small surface area and streamlined shape to create less wind resistance and minimise water loss

Question 3

State the adaptations for a extremely hot environment.

Answer 3

 Plants reduce water loss by trapping water vapour
close to their leaves to decrease diffusion out of leaves

 They have stomata located in small pits where water
vapour collects because it is less exposed to air
movement.

 Other plants have tiny hairs to trap water vapour.

 Some leaves can curl up to trap water.

 Spikes instead of leaves – no stomata so less transpiration (water loss)

 Thick stem – to store more water

 Roots – near the surface to absorb more water when it
rains