(a) How and why is moisture given off from leaves?
(b) What is the reaction of leaves to light?
(c) What is made in green leaves in the sunlight?
(d) What by-products are given off in the above process?
(e) Other functions of leaves.
Laboratory Suggestions
Demonstration.—Water given off by plant in sunlight. Loss of weight due to transpiration measured.
Laboratory exercise.—
(a) Gross structure of a leaf.
(b) Study of stoma and lower epidermis under microscope.