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✪ Photosynthesis
✪ Photolysis in water
✪ Half leaf experiment
✪ The effect of water stress in plants especially in stomata
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PHOTOSYNTHESIS==>it is the process of conversion of inorganic matter(CO2+H2O) into organic matter(C6H12O6-glucose) by plants i presence of sunlight and pigments(chlorophyll)..in this process main priduct is glucose and O2 is released as BY PRODUCT..this occur in two phase in differenrent different sites..first phase called as light rxn in which plant generate assimilatry powr(ATP+NADPH2) and another phase is called as dark rxn in which formation of glucose occur by use of assimilatry power in cavin cycle(C3 cycle)...light rxn occur in granal part of thyllakoid where as dark rxn occur in stromal part..these process are associated with two Photosystems(PS1) and PS2..
PHOTOLYSIS OF WATER===>this is the process by which PS 2 can continiously supply e- to electron transport chain...it occur in the lumen of thyllakoid...photolysis of water is related to non cyclic photophosphorylation...this is the process by which O2 is evolved in the lumen of thyllakoid...Mn2+ and Cl- are needed for this process..
HALF LEAF EXPERIMENT=>moll's half leaf experiment is all about to show essential role of CO2 in plants..in this exp. half of the leaf is kept sealed in a bottle.bottle is filled with some KOH soln which is to absorb all the CO2 (+)nt inside the bottle. while other half part is kept open in atmosphere...the part which is outside the bottle gives (+)ve iodine test(leaf show blue black colour) bcz the starch(glucose is stored in the form of starch) is formed in outer part of leaf ..where as inner part give (-)ve iodine test...this shows essentiallity of CO2 in photosynthesis....
EFFECT OF WATER STRESS IN PLANT STOMATA=>when there is need of water to plant but plant is not getting required amount of H2O then this cndsn is called as water stress cndsn...during such cndsn there is reduction in turgor press of gaurd cell of stomata..which result in closser of stomata...bcz of this mechanism loss of water from stomata(transpiration) is lowered..and H2O is conserved....
PHOTOLYSIS OF WATER===>this is the process by which PS 2 can continiously supply e- to electron transport chain...it occur in the lumen of thyllakoid...photolysis of water is related to non cyclic photophosphorylation...this is the process by which O2 is evolved in the lumen of thyllakoid...Mn2+ and Cl- are needed for this process..
HALF LEAF EXPERIMENT=>moll's half leaf experiment is all about to show essential role of CO2 in plants..in this exp. half of the leaf is kept sealed in a bottle.bottle is filled with some KOH soln which is to absorb all the CO2 (+)nt inside the bottle. while other half part is kept open in atmosphere...the part which is outside the bottle gives (+)ve iodine test(leaf show blue black colour) bcz the starch(glucose is stored in the form of starch) is formed in outer part of leaf ..where as inner part give (-)ve iodine test...this shows essentiallity of CO2 in photosynthesis....
EFFECT OF WATER STRESS IN PLANT STOMATA=>when there is need of water to plant but plant is not getting required amount of H2O then this cndsn is called as water stress cndsn...during such cndsn there is reduction in turgor press of gaurd cell of stomata..which result in closser of stomata...bcz of this mechanism loss of water from stomata(transpiration) is lowered..and H2O is conserved....
shubham108:
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✪Photosynthesis is the process by which plants, some bacteria, and some protistans use the energy from sunlight to produce sugar, which cellular respiration converts into ATP, the "fuel" used by all living things.
✪decomposition induced by light or other radiant energy.Photolysis plays an important role in photosynthesis, during which it produces energy by splitting water molecules into gaseous oxygen and hydrogen ions.
✪A part of a leaf is enclosed in a test tube containing some KOH solution, and the other halfis kept out exposed to air. It is made sure that the leaf does not break off from the plant body while theexperiment is going on.
✪In the leaf tissues of plants grown under a water stress condition, both hypericin .... This effect is particularly relevant to oil and protein content during the seed germination
✪decomposition induced by light or other radiant energy.Photolysis plays an important role in photosynthesis, during which it produces energy by splitting water molecules into gaseous oxygen and hydrogen ions.
✪A part of a leaf is enclosed in a test tube containing some KOH solution, and the other halfis kept out exposed to air. It is made sure that the leaf does not break off from the plant body while theexperiment is going on.
✪In the leaf tissues of plants grown under a water stress condition, both hypericin .... This effect is particularly relevant to oil and protein content during the seed germination
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