Zoology - Digestion and Absorption Question with Solution | TestHub
Read the following four statements (A-D):
A. The small intestine is the principal organ for the absorption of nutrients.
B. In constipation, the faeces are retained within the rectum as the bowel movements occur irregularly.
C. The gross calorific value of fat is 4.1 Kcal/g.
D. The innermost layer lining the lumen of the alimentary canal is the serosa.
How many of the above statements are wrong?
Options:
Answer:
Solution:
Statements 1&2 are correct whereas statements 3&4 are incorrect.
The small intestine is the most important absorbing organ in the GI tract. About 90% of nutrient absorption takes place in the small intestine.
Constipation: In constipation, the faeces are retained within the rectum as the bowel movements occur irregularly.
Gross calorific values of fat is 8.8 kcal/gm.
Serosa is the outermost layer and is made up of a thin mesothelium (epithelium of visceral organs) with some connective tissues. The innermost layer lining the lumen of the alimentary canal is the mucosa.
