3. Raw materials from environment H 2 O CO 2 Green plants make carbohydrate Animals eat plants containing carbohydrate
4. Raw materials and products of photosynthesis Soil Water (H 2 O) -Respiration -Stored as starch -Structural cellulose -Respiration Glucose Oxygen Atmosphere (Air) Carbon dioxide (CO 2 ) Use of products Products Source of raw materials Raw materials
5. Investigation of the Requirements for Photosynthesis Light is required for photosynthesis Uncovered areas turn blue black in the presence of iodine Covered areas turn brown in the presence of iodine Light Conclusion Result Experiment Requirements of photosynthesis
6. Investigation of the Requirements for Photosynthesis Chlorophyll is required for photosynthesis Green areas turn blue black in the presence of iodine White areas turn brown in the presence of iodine Chlorophyll Light is required for photosynthesis Uncovered areas turn blue black in the presence of iodine Covered areas turn brown in the presence of iodine Light Conclusion Result Experiment Requirements of photosynthesis
7. Investigation of the Requirements for Photosynthesis CO 2 is required for photosynthesis No CO 2 – brown in the presence of iodine CO 2 - black Carbon Dioxide Chlorophyll is required for photosynthesis Green areas turn blue black in the presence of iodine White areas turn brown in the presence of iodine Chlorophyll Light is required for photosynthesis Uncovered areas turn blue black in the presence of iodine Covered areas turn brown in the presence of iodine Light Conclusion Result Experiment Requirements of photosynthesis CO 2 No CO 2
10. Stomata are needed for gas exchange in the leaf Carbon dioxide oxygen Guard cell If plant is photosynthesising
11. Stomata open and close at different times of the day. When it is light the plant needs CO 2 for photosynthesis so the stoma open. At night (darkness) they close.
12. Food Transport in Plants Sugar is used for root growth or stored as starch Sugar is used for growth of fruit or stored in fruit Sugar is used for growth of shoots and young leaves Sugar is made in leaves by photosynthesis
13. The Structure of the Stem and the Root Xylem Xylem Phloem Phloem Phloem } Vascular bundle
14. Tube like structure containing xylem and phloem to transport water and sugars. Vein
15.
16. Structure of Xylem Rings of lignin Lignin deposited in the cell wall End wall disintegrated
17.
18. Comparing Xylem and Phloem Transports water & strengthens plant. Xylem Transports sugar. Phloem
![Making Food ,[object Object],[object Object],Water + Carbon dioxide Glucose + Oxygen Light Raw materials Energy Products](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)