Biology 1 from 3

Water is used in digestion to hydrolyser many substance e.g. Proteins to amino acid fats, glycerol.
Water is a medium for chemical reaction in a cell.
Water is necessary for the diffusion of materials across surface e.g. lings or alimentary canal.
Green plants use water as a major raw material for the process of photosynthesis.
Water present in blood plasma, tissue fluid, lymph and used to dissolve, transport many substances.
Water help in the removal of waste like ammonia, urea from the body in solution in urine.
Water present in synovial fluid help to lubricates the joints in many vertebrates during movement, pleural fluid during lung movement.
Water serves as a hydrostatic skeleton to support the body, of some organisms e.g. earthworm.
Herbaceous plants are kept firm by osmotic influx of water into their cells.
The numinous of the eye which is made up of mostly of water which helps to maintain the shape of the eye invertebrates.
Water serves as a habitat for many organisms.
Water helps the cooling of temp e.g. evaporation of water during sweating, transpiration in plants.
Water serves as a medium for dispersal of seed germination.
Water helps to moisten respiratory surface e.g. the laved for e lungs for gasses to dissolve.

par Claude Foumtum

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