Question

The urinary bladder is absent in______________

• A. Chameleon
• B. Snake and crocodile
• C. Snake
• D. Wall lizard

Answer 1

The correct option is B Snake and crocodile

Snakes, crocodiles, and birds don't urinate, urea and other water soluble stuff are pushed out with the faeces. Urinating is a balance between getting rid of waste and keeping hydrated. Birds and reptiles ‘urinate’ in a way to conserve their water. Unlike mammals, which excrete waste fluid (e.g., urea in water) as urine and solid waste as faeces, birds, snakes and crocodiles mix both liquid waste and solid waste into the semi-solid paste. Thus, they do not possess a urinary bladder.

So, the correct answer is option B.