Question

Where is jelly deposited as a covering on the egg of a frog?
A. In the oviduct
B. In the water during fertilization
C. In the water after fertilization
D. In the ovary

Answer 1

Hint: The process of covering the frog's egg with jelly takes place during the process of reproduction. In addition to it, the egg is surrounded by a tertiary egg membrane during its passage from the mullerian duct to the cloaca. As a frog is an amphibian it can live on both land and water.

Complete step-by-step answer: Frogs are the amphibians in which fertilization takes place outside the body but in some species, internal fertilization is also seen. In external fertilization female frogs release their eggs in water from their body. Then the male frogs release their sperm into the water for fertilization. The vitelline membrane and an adhesive jelly coating which is also known as the tertiary egg membrane surround the egg of a female frog. This tertiary egg membrane is deposited on an egg in the oviduct during its passage from the oviduct to the cloaca. The female oviduct is also called the mullerian duct. Due to the location of the jelly receptor, the capable sperm readily fertilizes the female egg. The common exit for the intestinal, urinary, and reproductive tract is the cloaca.

Hence, the correct answer is option A: in the oviduct as the jelly covering on the egg is seen during its passage from the oviduct.

Note: The female oviduct is also called a rudimentary oviduct. Due to the absence of lumen, its size is very much reduced. Therefore, locating these ducts is difficult due to its small size. Oviducts present in male frogs have no role in reproduction and are vestigial in nature.