AIIMS 2019 Zoology Digestive System MCQ Question

The typhlosole is an internal median fold of the ventral intestinal wall that increases the surface area for absorption, facilitating the efficient uptake of nutrients and water (H₂O) in organisms such as earthworms. Option A is incorrect because it does not specify the function of the typhlosole; option B is misleading, as the typhlosole is not limited to specific segments but is a continuous structure; option D is incorrect since the primary role of the typhlosole is to enhance, not decrease, the surface area available for absorption. Understanding the role of the typhlosole is crucial for comprehending how certain organisms optimize nutrient absorption in their digestive systems.