Excretion in other organisms

Excretion in other organisms

1. WELCOME

2. SREE NARAYANA TRAINING COLLEGE POOCAKKAL P.O CHERTHALA

3. Submitted by neethu . k.a natural science reg no.13383010 c

4. Submitted to soya.p lecturer in natural science a

5. POWER POINT PRESENTATION ON Excretion in other organisms a

6. AMOEBA There are no excretory organs in amoeba which is a unicellular organism. But this function is performed with the help of contractile vacuoles. Excess water that reaches the body is also expelled through the contractile vacuole .

7. EARTH WORM Nephridia are the excretory organs in earth worm. They separate water, nitrogenous wastes, etc., from the body cavity and expel them throgh the pores on the body surface

8. INSECTS The excretory organs of insects are known as malpighian tubules. They are minute tubes spead out in the body fluid that fills the body cavity and open out into the alimentary canal. Malpighian tubules separate impurities from the body fluid and carry them to the alimentary canal, from where they are expelled .

9. FISH The major excretory material in fish is ammonia, which is excreted directly in to water through the kidneys

10. FROG Kidneys are the organs of excretion in frogs too. In tadpoles which are fully aquatic, ammonia is the excretory material. But when tadpole metamorphose into frog , instead of ammonia, urea is eliminated as the excretory material

11. REPTILES AND BIRDS Uric acid is the excretory material in birds and reptiles. It is solid or semisolid in form and insoluble in water. This minimises the loss of water through excretion. Kidneys are the excretory organs in them too

12. THANK YOU