a) Synthesis of waste products in plants – is very slow. b) Plants do not have specific excretory organs

(2) Less proteins and more waste products

D) platyhelminthes

Special excretory organs are absent in amoeba

(C) Protozoa

(C) Metanephridia

Malpighian tubules are excretory organs in Housefly

Answer is (C) 1 and 2

The various excretory products produced by the human body are as follows:  1. Fluids such as water; gaseous wastes like CO ; nitrogenous wastes like ammonia, urea and uric acid, creatinine;...

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...