Science — AI-generated practice question

The small intestine is designed for efficient absorption in the following ways:

1. Length: It is the longest part of the alimentary canal, providing more time and space for absorption.
2. Villi: The inner lining has numerous finger-like projections called villi, which greatly increase the surface area available for absorption.
3. Rich blood supply: The villi are richly supplied with blood vessels, which carry the absorbed food (glucose, amino acids, fatty acids, glycerol) to every cell of the body.

These adaptations ensure maximum absorption of digested nutrients into the bloodstream.

Source: Chapter 5, Section 5.2.4 – Nutrition in Human Beings

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Examiners expect three distinct points for 3 marks — length, villi (with the term clearly stated), and blood vessel supply. The key term villi must be mentioned. Avoid writing about digestion here; the question asks only about absorption. Each point should be concise — one sentence each is enough.