Question -
Answer -
(i) Major part of allliving system is made of water.
(ii) It constitutes about 65 – 70% of body weightsof animals and plants.
(iii) Some properties of water like high specificheat, thermal conductivity, surface tension, high polarity allow water to playa major role in biosphere.
(iv) Because of high heat of vaporisation it isresponsible ro regulate temperature of living beings.
(v) It is an excellent fluid for thetransportation of minerals and nutrients in plants.
(vi) It is also required for photosynthesis inplants.