Photosynthesis 3

Photosynthesis Photosynthesis is the process that produces food in plants in the form of glucose. Word equation Sunlight Carbon dioxide + Water Glucose + Oxygen Chlorophyll Symbol equation Sunlight Chlorophyll 6CO2 + 6H2O C6H12O6 + 6O2

Section through a leaf Cuticle Epidermis Palisade layer Vein Spongy layer cells Air space Stomata Guard cell Lower Epidermis

Leaf Design for Photosynthesis Leaves are thin and flat to catch sunlight. Palisade cells, rich in chloroplasts, are found at the top of the leaf. Guard cells control movement of gases in and out of leaf. Leaves have veins to bring in water.

Testing for Starch Wash in Water Boil for 1 Minute Warm in Methylated Spirits Test for Starch

Starch Test Stage 1 - Boil to remove waxy cuticle Stage 2 - Dissolve Chlorophyll in Ethanol Stage 3 - Wash in water to soften Stage 4 - Test with Iodine for Starch

Which is the correct result?

Which is the correct result?

Factors Affecting Photosynthesis Carbon Dioxide concentration Light intensity Color of light Temperature Less Carbon Dioxide means less glucose can be made. More light means more energy Plants mainly use blue and red light. Warmth increases the rate that enzymes work, however, high temperature denatures enzymes. Low temperatures slow reactions.

Colors of Light Used By Plants % Absorption Wave Length

Products of Photosynthesis and how they are used N Frost Products of Photosynthesis and how they are used Glucose is: converted into starch for storage used for respiration used to make cellulose for support converted to protein to make cells converted into sucrose. Oxygen is: used by plants for respiration. Glucose & Oxygen