Thursday, May 28, 2009

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plants Excretion in plants and animals

EXCRETION IN PLANTS: In plants there is no proper excretion and to not have specialized structures to perform this function. The amount of waste substances is very low. Some of these products are reused in anabolic processes: WATER and CARBON DIOXIDE can be used for photosynthesis. The waste produced is not always just go abroad. Can accumulate in vacuoles and intercellular spaces.
waste substances can be gaseous, solid or liquid:
- SOLID: may be crystals of calcium oxalate.
- LIQUID: essential oils (peppermint, lavender, eucalyptus), resins, latex (rubber), etc..
- SODAS: carbon dioxide and ethylene gas (mature fruit).
Water and carbon dioxide, breathing
products are used in photosynthesis, the plants can use nitrogen wastes in the synthesis of new proteins, which reduces their need for excretion. The plants have no excretory organs specialized products eliminate them breathing through stomata, root hairs and lenticels and other wastes are stored in the body of the plant.
EXCRETION IN FUNGI: The waste is typically incorporated into the composition of the wall, keeping them out of the environment where it matters physiologically active toxicity.

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