Learning Outcomes:

● describe the functions of

- arteries (carries blood away from the heart),

- veins (carries blood towards the heart) and

- blood capillaries (site of exchange of nutrients) in relation to the transport system in humans. (Note: structure of the blood   vessels and the heart not required) 

● *show an understanding that xylem transports water and dissolved substances from the roots to the other parts of the plant while the phloem transport food from the leaves to other parts of the plant

● *explain the need for a transport system in multi- cellular organisms

● explain how diffusion facilitates the transport of substances in plants (e.g., diffusion of gases and mineral salts into and out of plant cells)

● explain how diffusion facilitates the transport of substances in humans (e.g., diffusion of digested food and oxygen from blood to tissues) 

● *state that osmosis facilitates the absorption of water at the roots

● *infer from investigation that xylem transports water and mineral salts

● show an awareness that the abuse of drugs has detrimental effects on many systems in humans, including the transport system

● show awareness of the ethical issues relating to heart transplant (e.g., donor consent and priority for allocation)