Question

Maximum absorption of water occurs in:

• A. colon
• B. rectum
• C. large intestine
• D. small intestine

Answer 1

The Correct Option is A

The chief functions of the large intestine are the absorption of water and the elimination of solid wastes. Large intestine is divided into three parts i.e., caecum, colon and rectum. In mammals, colon has essential water absorbing role in preparation of faeces.

Answer 2

The main organs of the gastrointestinal tract are the mouth, esophagus, stomach, small intestine, large intestine, and anus. The options given in the question pertain to parts of the small and large intestines. The small intestine consists of the duodenum, jejunum, and ileum, while the large intestine includes the colon.
The duodenum is the first part of the small intestine, situated between the stomach and the jejunum. It is responsible for breaking down food and absorbing vitamins A, D, E, and K. However, the question asks about the maximum absorption of water, which is not a function of the duodenum. Thus, this is not the correct option.
The jejunum is located between the duodenum and ileum and absorbs sugars, amino acids, and fatty acids. Hence, it is also not the correct option.
The ileum is the final part of the small intestine and connects to the cecum, the first part of the large intestine. It primarily absorbs Vitamin B12 and bile acids, making it an incorrect option as well.
The colon, the last part of the large intestine, is responsible for absorbing fluids and processing waste products to be excreted through the anus. The maximum absorption of water occurs in the colon, which also absorbs drugs and metals. 
Therefore, the colon is the correct answer.