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Question
How have the terrestrial organisms adapted themselves for conservation of water?
Solution
Conservation of water is highly important for terrestrial organisms because water is not available in plenty in the case of terrestrial habitats. Removal of nitrogenous wastes from the body involves removal of a lot of water from the body. But to tackle the problem, terrestrial organisms have adopted ureotelism and uricotelism modes of excretion. These modes require less water than ammonotelism. Animals which live in extremely dry conditions have adopted uricotelism because it is the best mode as far as the conservation of water is concerned.
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