Why do organisms need water?
NCERT Class IX
Sciences - Main Course Book
Chapter 14. Natural Resources
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Answered by
32
Water is the most essential component of life. It is essential for the sustenance of life.
• Water makes up about 70 percent of body weight and plays a vital role in the metabolic reactions taking place within the body.
• It acts as a universal solvent, thus providing a medium for many chemical reactions to take place.
• It also acts as a medium for transporting substances from one part of the body to the other in a dissolved form.
• Water is unique as its density is similar to that of protoplasm.
• Water is also required for many other purposes like drinking, cooking, cleaning, crop
irngation, generation of hydro-electricity, industrial needs, etc.
• Water makes up about 70 percent of body weight and plays a vital role in the metabolic reactions taking place within the body.
• It acts as a universal solvent, thus providing a medium for many chemical reactions to take place.
• It also acts as a medium for transporting substances from one part of the body to the other in a dissolved form.
• Water is unique as its density is similar to that of protoplasm.
• Water is also required for many other purposes like drinking, cooking, cleaning, crop
irngation, generation of hydro-electricity, industrial needs, etc.
Answered by
21
Human body contains 60-70percent of water. All the substancsare transported from one part of the body to the other is a dissolved from also off the cellular process take place in water medium hence organisms need water
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