Question

Explain excretion in plants with full details

Answer 1

Plants

1. Plants have no special organs for the removal of waste. The excretory products in plants are eliminated from the plant body by different mechanisms.
2. The waste products of respiration and photosynthesis are used as raw materials for each other.
3. Oxygen gas produced as a by-product of photosynthesis is used up during respiration and carbon dioxide produced during respiration is used up during photosynthesis.

Excretion is carried out in the plants in the following ways:

1. The gaseous wastes, oxygen, carbon dioxide, and water vapor are removed through the stomata of leaves and lenticels of stems.
2. Some waste products collect in the leaves and bark of trees. When the leaves and bark are shed, the wastes are eliminated.
3. Some waste products are rendered harmless and then stored in the plant body as solid bodies. Raphides, tannins, resins, gum, rubber, and essential oils are some such wastes
4. The oil produced from orange, eucalyptus, and jasmine, latex from the rubber tree, papaya tree, and gums from acacia, are different forms of stored waste products. Sometimes these products are even excreted into the soil.