digestion have to be removed from body. This process is called excretion. All animals have special organs for excretion.
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Animals excretion презентация
Содержание
- 1. Animals excretion
- 2. Protozoans (amoeba, paramecium) They have contractive vacuole
- 3. Flatworms(planaria) Flatworms use flame cells to excrete
- 4. Segmented worms (earthworm) Segmented worms have net
- 5. Crustaceans(crayfish, lobster) Excretory organs of crustaceans are green glands.
- 6. Insects(ant, bee) Insects use Malpighian tubules
- 7. Arachnida(spider) Coxal glands and Malpighian tubules
- 8. Fish They use gills to excrete CO2(carbon dioxide) and kidneys to remove ammonia.
- 9. Amphibians (frog) Adult amphibians use lung and
- 10. Reptiles(lizards and crocodiles) and birds They
- 11. Mammals They have bean shaped kidneys which
Слайд 2Protozoans (amoeba, paramecium)
They have contractive vacuole to remove wastes, or diffusion
is another way to remove waste(CO2) from the cell.
Слайд 3Flatworms(planaria)
Flatworms use flame cells to excrete wastes. Many flame cells come
together to form a net of tubules. Tubule collect wastes and excrete them through pores.
Слайд 4Segmented worms (earthworm)
Segmented worms have net of ciliated tubules called nephridia.
They remove wastes outside through the pores.
Слайд 9Amphibians (frog)
Adult amphibians use lung and skin to excrete CO2, and
oval kidney to remove ammonia
Слайд 10Reptiles(lizards and crocodiles) and birds
They remove uric acid from kidney
through cloaca, and lungs to remove CO2
Слайд 11Mammals
They have bean shaped kidneys which are connected to urinary bladder
by ureters. The waste products of mammals is urine. Some mammals also excrete salts by sweating.
