Question

Ureters acts as urinogenital ducts in-
a. Human females
b. Human males
c. Male frogs
d. Both male and female frogs

Answer 1

Hint: The genitalia of amphibians for both sexes are found within their bodies. The kidneys are urine-excreting organs. A ureter, a tube through which urine passes into the urinary bladder, is attached to each kidney.

Complete answer:
> Option A is incorrect. A ureter is a tube that brings urine to the urinary bladder from the kidney. Two ureters exist, one attached to each kidney. In the belly, the upper half of the ureter is found, and in the pelvic region, the lower half. Muscular tissue helps to push downward urine.

> Option B is incorrect. The key components of the system for both men and women are the kidneys, ureters, bladder, and urethra. In the kidneys, urine is produced. It flows through the bladder and into tubes called ureters. Urine comes into the urethra and leaves the body.

> Option C is correct. Each kidney in the frog is composed of several structural and functional units called nephrons or uriniferous tubules. In male frogs, two ureters emerge from the kidney. The ureters act as a duct of the urinogenital opening into the cloaca. The thin-walled urinary bladder, which opens in the cloaca, is ventral to the rectum.

> Option D is incorrect. In frogs, the kidney is connected to two ureters. The ureters open into the cloaca of the male frog, helping to pass the urine and sperm. In the female frog, it opens into the cloaca separately and helps to excrete urine.

Hence, the correct answer is option (C).

Note: The following organs, a pair of testes, vasa efferentia (10-12 in number) and the urinogenital duct that opens into the cloaca are part of the male reproductive system. The cloaca is a chamber used to transmit faecal matter, urine, and sperm to the outside.