Name two factors required for starch formation which are being investigated. Name the reagent to be used when testing a leaf for starch. State one safety precaution to be taken into account when testing the leaf for starch.

c)

(i) Before the leaf was destarched: Shade the entire leaf.

(ii) After the leaf was destarched: Do not shade any part of the leaf.

(iii) When the leaf partly covered with foil was tested for the presence of starch: Shade the outer parts of the leaf (the areas not covered by the foil).

d) Two factors required for starch formation which are being investigated:

1. Light
2. Chlorophyll

e)

(i) The reagent to be used when testing a leaf for starch is iodine solution.

(ii) One safety precaution to be taken into account when testing the leaf for starch is to heat the alcohol in a water bath because alcohol is highly flammable and should not be heated directly over a naked flame.