Unit 5 · Animal Form and Function
Nitrogenous excretory products (ammonia, urea, uric acid) and the organs animals use, from contractile vacuoles and flame cells to Malpighian tubules, and osmoregulation in freshwater, marine and desert animals.
Deshapriya Senevirathne. B.Sc. (Hons) Biology Special, University of Peradeniya — graduated with a class pass. All the content and lessons in A/L Biology on Paadama are reviewed by Deshapriya Senevirathne, and the lessons are taught by him.