Which one is not an excretory organ

Which is not an excretory organ of vertebrates ?

Which is not an excretory organ of vertebrates ?

Which is not an excretory organ of vertebrates ?

Which one is the excretory organ in the following

Which is not a excretory organ?

Excretory organs help the body in getting rid of waste products: Which of the following organs is not an excretory organ?

Which of these is an excretory organ of the human body?

(a) Identify figure A to D (b) Which one of them is (i) diploblastic , (ii) triploblastic ? (c) Which triploblastic animal is (i) Acoelomate (ii) Coelomate ? (d) Which one belong to phylum (i) Cnidaria , (ii) Platyhelminthes , (iii) Annelids , (iv) Arthropoda ? (e) Which one of them has (i) Organ level organism , (ii) Organ-system level organisation ? (f) Which one of them has excretory organs in the form of (i) Flame cells , (ii) Nephridia ? (g) Which one of them has trachea as the respiratory organ ?