Digestive System of Frog MCQ - Practice Questions with Answers

 Digestive System of Frog

• The digestive system consists of alimentary canal and digestive glands

Alimentary Canal:

• The alimentary canal is short because frogs are carnivores and hence the length of intestine is reduced
• The mouth opens into the buccal cavity that leads to the oesophagus through pharynx.
• Oesophagus is a short tube that opens into the stomach which in turn continues as the intestine, rectum and finally opens outside by the cloaca.
• Teeth of frog are homodont, acrodont and polyphyodont. They are small, sharp and backwardly directed which are not meant for mastication but for preventing escape of prey.

Digestive Glands:

• Liver secretes bile that is stored in the gallbladder. 
• Pancreas, a digestive gland produces pancreatic juice containing digestive enzymes.
• Process of Digestion:
• Food is captured by the bilobed tongue.
• Digestion of food takes place by the action of HCl and gastric juices secreted from the walls of the stomach. 
• Partially digested food called chyme is passed from stomach to the first part of the small intestine, the duodenum. 
• The duodenum receives bile from the gallbladder and pancreatic juices from the pancreas through a common bile duct. 
• Bile emulsifies fat and pancreatic juices digest carbohydrates and proteins. 
• Final digestion takes place in the intestine. 
• Digested food is absorbed by the numerous finger-like folds in the inner wall of intestine called villi and microvilli. 
• The undigested solid waste moves into the rectum and passes out through the cloaca.
• Cloaca is common chamber where in rectum, ureters, oviducts and urinary bladder open. It leads to outside through a cloacal aperture.