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 of the reproductive system in mammals secretes…Which of the following peoples can be found in most…SS2 Biology Lesson Note on Excretory SystemWhich of the following substances is not an…Which excretory product is NOT found in mammals?