The word âexpediteâ simply means âto perform quicklyâ. The word itself is derived from Latin. The prefix âexâ (meaning âoutâ) and the word âpedâ (meaning âfootâ) originally came together in âexpedireâ (âfreeing the footâ), though soon afterwards someone swanned in with a âtâ and it became âexpediteâ.
The raw materials of photosynthesis, water and carbon dioxide, enter the cells of the leaf, and the products of photosynthesis, sugar and oxygen, leave the leaf. Cross section of a leaf, showing the anatomical features important to the study of photosynthesis: stoma, guard cell, mesophyll cells, and vein. Image from Purves et al., , 4th Edition, by Sinauer Associates (www.sinauer.com) and WH Freeman (www.whfreeman.com), used with permission.
Photosynthesis takes place inside plant cells in small things called chloroplasts. Chloroplasts (mostly found in the mesophyll layer) contain a green substance called chlorophyll.Below are the other parts of the cell that work with the chloroplast to make photosynthesis happen.Structure of a mesophyll cell.hloroplasts (mostly found in the mesophyll layer) contain a green substance called chlorophyll. Below are the other parts of the cell that work with the chloroplast to make photosynthesis happen.