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प्रश्न
How have the terrestrial organisms adapted themselves for conservation of water?
उत्तर
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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संबंधित प्रश्न
Excretion is essential phenomenon because ______.
Excretory product of spider is ______.
Different types of excretory structures and animals are given below. Match them appropriately and mark the correct answer from among those given below:
| Excretory structure/ organ | Animals |
| A. Protonephridia | i. Prawn |
| B. Nephridia | ii. Cockroach |
| C. Malpighian tabules | iii. Earthworm |
| D. Green gland or Antennal gland | iv. Flatworms |
Which one of the following statements is incorrect?
Which of the following pairs is wrong?
What is the excretory product from kidneys of reptiles?
Identify the glands that perform the excretory function in prawns.
What is the excretory structure in amoeba?
Complete the following:
Dialysis fluid = Plasma –
Aquatic animals generally are ammonotelic in nature where as terrestual forms are not. Comment.
