Bio+Photosynthesis+notes

Stuff to know: -stomata takes in air, not carbon dioxide/plants take in carbon dioxide -water leaves the leaf when stomata is opened to take in air, leaf has higher water potential -light-dependant stage, photolysis carbon. light-independant stage, fixation -when leaves placed in boiling alcohol, the leaf will be de-colorized due to the fats in the plasma cell membrane dissolving and allowing the chloroplast to leak out. When in boiling water,enzymes are destroyed and all enzyme activity stops How does the structure of the leaf aid in its function?

Air: -have hole that are called stomas to allow gaseous exchange, generally found at the lower epidermis to prevent water loss/stomata found mainly on the underside of leaf,decreases the rate of evaporation due to sun through perspiration -therefore, spongy layer found nearer to the lower epidemis. Also, it has irregular cells with large intercellular air space Leaf: -thin, air exchange -large surface area to its volume, large surface area for absorption of sunlight

-longer axis of the palisade mesophyll is perpendicular to the upper epidermis of the leaves -every palisade mesophyll cell has a chloroplast -epidermal area is transparent to allow light to enter and focus the light to shine on it