Malpighian tubules are excretory organs in ……..

D) platyhelminthes

Special excretory organs are absent in amoeba

(C) Protozoa

(C) Metanephridia

(A) Both a & b are true

1. Malpighian tubules are the main excretory organs of cockroach. 2. They are thin, yellow coloured, ectodermal thread-like structures that lie in the  3. These tubules are 150 in number. Malpighian tubules...

The correct answer is (B) midgut and hindgut

Answer is (C) 1 and 2

Excretory OrgAnswer:  1. Lungs: Remove CO2 and also water vapour to a considerable extent. Volatile substances present in spices and other food stuff are excreted through lungs  2. Kidneys: Remove nitrogenous waste products...