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Question
What are the methods used by plants to get rid of excretory products?
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Solution 1
Plants can get rid of excess of water by transpiration. Waste materials may be stored in the cell vacuoles or as gum and resin, especially in old xylem. It is also stored in the leaves that later fall off.
Solution 2
- Photosynthetic and respiratory wastes such as oxygen and carbon dioxide are used for respiration and photosynthesis. Any excess is expelled through the stomata.
- Excess water is removed through the process of transpiration.
- Waste products may be stored in leaves, bark, or other parts of the plant, which later fall off, removing the waste from metabolically active areas.
- In some plants, metabolic by-products are stored as crystals.
- Several substances, such as resins, tannins, and alkaloids, such as morphine and quinine, are also plant wastes, although they benefit humans.
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