(a)[2]
The roots of young rice plants tolerate ethanol very well. Explain how this helps them to survive when the fields are flooded.
(b(i))[2]
Describe the role of the endosperm.
(b(ii))[2]
With reference to the structure of rice grains, suggest why brown rice contains more protein than white rice.
(b(iii))[1]
Explain why brown rice contains less carbohydrate per gram than white rice.
(b(iv))[2]
Explain why the grains of cereals such as rice are staple foods in many parts of the world.