The dark reaction of photosynthesis is also known as Calvin cycle, photosynthetic carbon reduction cycle, light-independent reaction, or synthetic cycle.
These are redox biochemical reactions which do not require sunlight, occur in three stages in the stromal matrix of the chloroplast. Dark reactions utilize the light reaction products – ATP and NADPH (hydrogen ions and electrons) to fix inorganic carbon dioxide by forming organic 3-carbon sugar molecules of glyceraldhehyde 3-phosphate (G3P). This is converted to glucose which the plant utilizes for performing all metabolic activities. Enzymes like RuBisCo, phosphoglycerate kinase, and dehydrogenase catalyses the reactions under this phase.
The right option is; B. The Calvin cycle
Photosynthesis can be broken down into two steps; the light and dark reactions. The dark reaction is also known as the Calvin cycle.
The Calvin cycle (dark reaction) is the second stage of photosynthesis that occurs in the stroma (inner fluid) of the chloroplast. This cycle is light independent and it uses the two products of the light reaction which are ATP and NADPH along with carbon dioxide to produce high sugar molecule (glucose) which is transformed by plants into other molecules that is needed by the cell.
desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.
feral cats are estimated to eat tens of millions of native animals each night in australia