The excretory system in mammals consists of the following parts except? by Sunday | Dec 7 | Biology WAEC | 0 comments A. two kidneys B. two ureters C. two bladders D. one urethra Correct Answer: Option C C. two bladders Users Also Read These:Which excretory product is NOT found in mammals?The autonomic nervous system consists of neurons…The following substance are excretory products in…Which of the following substances is not an…SS2 First Term Biology Lesson Note – Excretory System II