Multiple choice

Which of the following animals does not have gall bladder?

  1. Frog

  2. Wall lizard

  3. Rat

  4. Rabbit

  5. None of the above

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Rats lack a gall bladder, so bile flows directly from the liver to the duodenum via the common bile duct. This adaptation is related to their nearly continuous feeding pattern. Frogs, wall lizards, and rabbits all possess gall bladders for bile storage and concentration.