Biology · STRUCTURAL ORGANISATION IN ANIMALS

Which statement accurately describes the anatomical location and opening of the urinary bladder in frogs?

1. It is a thick-walled muscular sac located dorsal to the rectum and opens directly outside via a urethra.
2. It is attached directly to the ventral side of the kidneys and empties directly into the paired ureters.
3. It is absent in males but present as a bilobed pouch ventral to the heart in females.
4. It is a thin-walled sac present ventral to the rectum, and it opens into the cloaca.