Plant Physiology is the branch of biology that deals with the functions and processes occurring in plants. It helps us understand how plants live, grow, develop, and respond to their environment. While plants may appear passive, they are constantly performing complex physiological activities such as:
Photosynthesis does take place in the green leaves of plants but it does so also in other green parts of the plants. There is a clear-cut division of labour within the chloroplast.
Usually the chloroplasts align themselves along the walls of the mesophyll cells, such that they get the optimum quantity of the incident light.
Photosynthetic pigments are special molecules those absorb, transmit and reflect different colours of light from the visible spectrum of sunlight. Pigment appears in the colour which it reflects and uses the colour which it absorbs.
PAR (Photosynthetic Active Radiation) → 400-700nm
Phycobillins
Light Reaction
Basic Steps:
Basic Steps:
1. Carbon Fixation:
2. Reduction:
3. Regeneration of RuBP:
(Session 2025 - 26)