discuss the various tyoes of adaptations in fresh water animals.
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⭐. The osmotic pressure of fresh water is very low than that of body fluids of fresh water animals.
⭐. So water tends to entre the bodies by endosmosis .
⭐. Fresh water organisms have evolved several adaptations to encounter endosmosis.
❤. ADAPTATIONS OF FRESH WATER ANIMALS.❤
⭐. In fresh water protozoans , contractile vacoules remove the excess water from their body.
⭐. In fresh water fishes , well developed glomerular kideny remove excess water from the body through urine.
⭐. In summer , most of the ponds dry up. To overcome this protozoans devwloped encystment.
⭐. Fresh water sponges produce gemmules , to survive in summer.
⭐. African lung fish undergoes aestivation by forming a gelatinous cocoon , to survive in summer.