In a study of the raw materials used for photosynthesis, the two molecules that would be studied are carbon dioxide and water. This is because they are the reactants of the process. Without these molecules the process of photosynthesis cannot happen.
Vascular tissue in plants is made of two specialized conducting tissues: xylem, which conducts water, and phloem, which conducts sugars and other organic compounds. A single vascular bundle always contains both xylem and phloem tissues.
<span>The generally accepted parts of modern cell theoryinclude: All known living things are made up of one or more cells. All living cells arise from pre-existing cellsby division. The cell is the fundamental unit of structure and function in all living organisms</span>
