Practicing Success

Target Exam

CUET

Subject

Biology

Chapter

Structural Organisation in Animals

Question:

Assertion: Final digestion in frogs takes place in the stomach. 

Reason: Digested food is absorbed by the numerous finger-like folds in the inner wall of intestine called villi and microvilli.

Options:

Both A and R are true, and R is the correct explanation of A.

Both A and R are true, but R is not the correct explanation of A.

A is true, but R is false.

A is false, but R is true.

Correct Answer:

A is false, but R is true.

Explanation:

The correct answer is Option (4) -A is false, but R is true.

Final digestion in frogs takes place in the stomach. The  is incorrect. The final digestion in frogs takes place in the intestine, not the stomach. The stomach contributes to the initial digestion process, but the majority of digestion occurs in the intestine.

Digested food is absorbed by the numerous finger-like folds in the inner wall of intestine called villi and microvilli. This is correct 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 gall bladder 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 cloaca.