Flame cells are excretory organs in

C) Cell theory

Special excretory organs are absent in amoeba

(C) Protozoa

(C) Metanephridia

(C) Nematoda

Malpighian tubules are excretory organs in Housefly

(A) Both a & b are true

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...