Question

Why do organisms need water ?​

Answer 1

Answer:

Living organisms need water to survive. ... Other organisms require water to break down food molecules or generate energy during the respiration process. Water also helps many organisms regulate metabolism and dissolves compounds going into or out of the body.

Answer 2

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Organisms need water due to the following

• (i) All cellular processes take place in a water medium.

• (ii) All the reactions that take place within our body and within the cells occur between substances that are dissolved in water.

• (iii) Substances are also transported from one part of the body to the other in a dissolved form.

• (iv) Water makes up about 70% of body weight Of all living organisms.

• (v) It helps in the digestion of food and absorption of nutrients in the blood. Hence organisms need to maintain the level of water within their bodies in order to stay alive. It helps in maintaining body temperature.