Which function becomes most effective due to many tiny projections in the wall of the small intestine?
Answer and explanation
Correct answer: Absorption of digested food.
The governing concept is the relationship between surface area and absorption. The tiny finger-like projections are called villi, and their cells have microvilli, together producing a very large absorptive surface. Digested nutrients can therefore pass efficiently into blood capillaries or lymph vessels. Option A is correct. Blood pumping, lung ventilation, and urine formation are functions of other organs, not intestinal projections.
Frequently asked questions
What is the correct answer to this question?
Absorption of digested food.
Why is this the correct answer?
The governing concept is the relationship between surface area and absorption. The tiny finger-like projections are called villi, and their cells have microvilli, together producing a very large absorptive surface. Digested nutrients can therefore pass efficiently into blood capillaries or lymph vessels. Option A is correct. Blood pumping, lung ventilation, and urine formation are functions of other organs, not intestinal projections.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Life Processes.
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