Where are villi present in the human alimentary canal?

Small intestine

The correct answer is Option (4) -  Small intestine

• Explanation:
• Villi are present in the small intestine of the human alimentary canal. The small intestine is the primary site for the absorption of nutrients from digested food. The presence of villi, along with microvilli, greatly increases the surface area of the small intestine, facilitating efficient absorption of nutrients such as sugars, amino acids, and fatty acids into the bloodstream. This enhanced surface area is crucial for the absorption and assimilation of nutrients for the body's metabolic processes. Villi are not present in the pancreas, esophagus, or stomach.