Transport In Plants

Question 1

Name the factors that affect the rate of diffusion

Answer 1

– Difference in concentration
– temperature
– surface area of the membrane
– thickness of the exchange surface/membrane

Question 2

What is the definition of osmosis

Answer 2

The net random movement of water molecules from a region of high water potential to a region of low water potential (down a water potential gradient) across a partially permeable membrane.

• passive process
  – pure water has a water potential of zero
  – the movement of water by osmosis into or out of