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Vocabulary Vocabulary 1. Photosynthesis ความหมาย (n.) การสังเคราะหด์ ้วยแสง Example: .] Photosynthetic cells are quite diverse and include cells found in green plants 2. Chlorophyll (n.) คลอโรฟลิ ล์ 3. carbondioxide Example: Chlorophyll substances appear in 4. Oxygen plants that absorb solar energy and use it in 5. Water the synthesis process 6. glucose (n.) แกส๊ คาร์บอนไดออกไซต์ Example: cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen. (n.) แก๊สออกซิเจน Example: Oxygen is released during the process of photosynthesis. (n.) น้ำ Example: Water is absorbed by the root hair cells. (n.) กลูโคส Example: glucose is transported around the plant in the phloem vessels.

Content The process of photosynthesis Plants need food to respire, grow and reproduce. Unlike animals, plants are able to make their own food by the process of photosynthesis. Photosynthesis takes place in the part of the plant cell containing chloroplasts, these are small structures that contain chlorophyll. For photosynthesis to take place, plants need to take in carbon dioxide (from the air), water (from the ground) and light (usually from the sun). Here is the word equation for photosynthesis Here is the chemical equation for photosynthesis: Carbon dioxide enters through the stomata on the underside of the leaf. Water is absorbed by the root hair cells and is transported to the leaf by the xylem vessels. Sunlight provides the energy needed for photosynthesis to take place. In this process carbon dioxide and water are converted into oxygen (a waste product that is released back into the air) and glucose (the source of energy for the plant). Oxygen is released through the stomata on the underside of the leaf; glucose is transported around the plant in the phloem vessels.

Direction lab photosynthesis Scientific apparatus 1. plant leaves 2. alcohol burner 3. Beaker 4. Test Tube Holder 5. Test Tube rack 8. Iodine 9. Ethanol 6. Forceps 7. Petri dish 10.water Experimenting 1. Pour water in the beaker 2. Boil water on an alcohol burner 3. Bring plant leaves to boil in the boiling water 4. Put the plant leaves into the test tube. And add ethanol until the plant leaves are covered Then bring to a boil until the leaves are pale white.

5. Bring plant leaves to a boiled 6. Bring plant leaves and Then washed with water put them on a petri dish 7. Iodine drops