The surface of the leaf is coated with a water-resistant waxy cuticle that protects the leaf from excessive evaporation of water and decreases the absorption of ultraviolet or blue light to reduce heating.
Carbon dioxide cannot pass through the protective waxy layer covering the leaf cuticlebut it can enter the leaf through the stoma the singular of stomataflanked by two guard cells. Plant-like protists, one-celled organisms containing chloroplasts, make their own contribution to the food chain and the conversion of carbon dioxide to oxygen.
Image credit: Shutterstock The following are cellular components essential to photosynthesis. The triose phosphates not thus "recycled" often condense to form hexose phosphates, which ultimately yield sucrosestarch and cellulose.
There is also a bacterial variant aptly named bacteriochlorophyll, which absorbs infrared light. These sugars are then used to make glucose or are recycled to initiate the Calvin cycle again.
Leaves and leaf structure Plants are the only photosynthetic organisms to have leaves and not all plants have leaves.
Chlorophylls: These green-colored pigments are capable of trapping blue and red light. Main articles: Chloroplast and Thylakoid In photosynthetic bacteria, the proteins that gather light for photosynthesis are embedded in cell membranes.
It is here that the transfer of electrons takes place. This effort limited severe famines to a few areas of the world despite rapid population growthbut it did not eliminate widespread malnutrition.