There are three pathways of dark phase of CO2 Fixation: 1. Calvin Cycle – C3 Cycle 2. Hatch and Slack Cycle – C4 Cycle 3. Crassulacean Acid Metabolism (CAM) Cycle. Dark phase of photosynthesis i.e. CO2 Fixation. Dark reactions are dependent on Enzymes but light reactions are dependent on pigments. In Dark reaction, CO2 is […]
Dark Reaction of Photosynthesis: 3 Pathways | Botany
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Light Reaction of Photosynthesis | Botany
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In this article we will discuss about:- 1. Light Reactions Evidences 2. Four Steps of Light Reaction 3. Products of Light Reaction 4. Robert Emerson’s Work & Red Drop. Light Reactions Evidences: 1) Hill’s Work with Isolated Chloroplasts: Hill (1937, 1939) and Scarisbrick (1940). If Oxidant (i.e. H-acceptor) is present with isolated chloroplast, oxidant is […]
Phases of Plant Disease-Cycle | Botany
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A plant disease never develops suddenly. It has a chain of events (stages, reactions and interactions) behind its successful manifestation in a host plant. This chain of events leading to the development of a disease is called ‘disease-cycle’. The whole chain of events constituting a disease-cycle is completed involving two basic phases: 1. Dormant phase […]