These modules concern with plant physiology that is a study of all the internal activities of plants—those chemical and physical processes associated with life as they occur in plants. Fundamental processes of plant physiology are photosynthesis, respiration, plant nutrition, plant hormone functions, tropisms, photoperiodism, photomorphogenesis, environmental stress physiology, seed germination and dormancy, stomata function and transpiration.

In the first part of these modules, students can learn on solutions and colloidal system; diffusion, osmosis and imbibitions; transpiration; water movement in plants; phloem translocation. In the later part, students enhance their knowledge on plant physiology by learning photosynthesis; respiration; growth and development; plant growth regulators; and mineral nutrition.