Photosynthesis and Respiration Unit: Plant Science
Five plant processes Photosynthesis Respiration Water Absorption Translocation Transpiration
Movement of Nutrients and Water Transpiration Translocation Absorption
Movement of water and nutrients Transpiration Loss of water by evaporation through the leaf surface Occurs when the stoma open to take in CO2
TRANSPIRATION
TRANSPIRATION
Movement of water and nutrients 2. Translocation a. movement of water and organic compounds within the plant
XYLEM and PHLEOM b. Vascular system: Xylem and Phloem c. Xylem- movement of water and nutrients up d. Phloem- movement of sugars and starch down
Movement of water and nutrients 3. Absorption a. nutrients absorbed through root hairs b. Osmosis occurs by diffusion c. Diffusion is the movement of molecules from high concentration to low concentration
Absorption
Photosynthesis Process through which green plants convert carbon dioxide and water in the presence of light into simple sugar 6 CO2 + 6 H2O chlorophyll C6H12O6 + 6 O2 (carbon (water) dioxide) light energy (glucose) (oxygen)
Photosynthesis
Photosynthesis Carbon Dioxide entrers plant through stomata on leaves Water absorbed through root hairs and moves to the leaves by the xylem tissue Light strikes the chlorophyll in the cells of leaf stem Light is absorbed enabling chemical reaction to take place between carbon dioxide and hydrogen in water Glucose most common carbohydrate and simple sugar Trasported by the phloem tissues to other parts of the plant Osygen is released as a by-product through the stomata Water vapor is released when the stomata open
Plants use food for…. Energy Plant growth Store food Respiration
Energy http://www.indiana.edu/~oso/animations/potato.html
Plant Growth http://www.indiana.edu/~oso/animations/ginkgogrowth.html
Respiration Breakdown of glucose C6H12O6 + 6O2 6CO2 + 6H2O + energy Releases Carbon dioxide and water into the air Aerobic respiration- presence of oxygen Anaerobic respiration- without oxygen
Air Quality Plants release oxygen into the atmosphere Plants absorb carbon dioxide from the atmosphere
REVIEW FOOD GLUCLOSE