The pressure can be as great as 5 times the pressure in a tire. The source includes the sites of photosynthesis that produce the sugar for the plant. The sink includes the parts of the plants that need or store products of the leaves. Molecules move from an area or higher concentration to that of a lower concentration. Plants can adjust to environmental conditions They can add more roots where they find a lot of nutrients.
Roots travel deeper into the soil to find water.
Tropisms Plants can alter their growth pattern in response to environmental conditions. Information contained on this page does not represent the lecture verbatim. These notes are not a substitute for class attendance.