9 – Excretion in Earthworm, Excretion in Invertebrate Animals
In this video lecture Amjad Umer Ranjha explained the excretion in earthworm in a detailed comprehensive way. Excretion in cockroach takes place with the help of Metanehridia. Metanehridia are advanced excretory tubules for excretion in earthworm. These metanehridia have an internal opening nehrostome, blood capillaries and a bladder. The excretory waste is removed out through nephridiopores. Difference between protonephridia and metanephridia is explained comprehensively.