Advertisements
Advertisements
Question
Why is water essential for life?
Advertisements
Solution 1
Water is essential for life because of the following reasons:-
(i) Most biological reactions occur when substances are dissolved in water. Thus, all cellular processes need water as a medium to take place.
(ii) Transportation of biological substances needs water as a medium.
Solution 2
Water is considered essential for life because of the following reasons :-
(i) All cellular processes take place in 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.
(vi) It helps in maintaining body temperature.
RELATED QUESTIONS
Explain how the peculiar variation of density of water with temperature can cause water— pipes to burst in very cold places.
Answer the following question:
Name two gases dissolved in natural water.
Identify A, B, C and D; first one is done for you.
Why is it said that seawater is useful even though it is not potable?
The water in a lake is called ground water.
Give the influence of pressure.
Unscramble the words and fill in the blanks.
- ondencsaonti ______
- vaeionorpat ______
- ecippitatrino ______
Mountains helps to regulate the temperature of our earth.
Which of the following does not show water shortage?
A jumbled word is given here. Write the correct form of the word.
WOSN
