Question

give short note on plant excretion

Answer 1

In green plants, the carbon dioxide released during respiration gets utilized during photosynthesis. Oxygen is a by product generated during photosynthesis, and exits through stomata, root cell walls, and other routes. Plants can get rid of excess water by transpiration and guttation.

Answer 2

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

1. The gaseous wastes, oxygen, carbon dioxide and water vapour are removed through 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.

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