KS3 Biology — The Human Digestive System — Full Worksheet

🍽️ Build deep understanding of the human digestive system with this complete, no-prep 100-mark worksheet — ready to use for lessons, homework, or revision. The digestive system is a collection of organs that break food into nutrients small enough to be absorbed into the blood, each with adaptations suited to its role — from the acid-producing stomach to the villi-lined small intestine — and this resource covers it in depth for KS3 students aged 11–14.

📦 What's included:

Structured across three sections of progressive difficulty:

Section 1 (30 marks) — six multiple choice questions on organ order, peristalsis, villi, and bile; a true/false table targeting eight common misconceptions; and a ten-gap fill-in-the-blank paragraph

Section 2 (40 marks) — short answer questions on the adaptations of the mouth, oesophagus, stomach, and small intestine; an eight-organ function table; definition writing for gland, adaptation, and digestion; and targeted questions on the roles of the pancreas and liver

Section 3 (30 marks) — extended writing tasks describing the complete journey of a meal through the digestive system, evaluating the misconception that the stomach is where all digestion happens, and explaining why fibre is essential despite being indigestible

Full answer key with detailed marking guidance included.

🎬 Watch the free video lesson: https://www.youtube.com/watch?v=7S5h2M87U3U

👩‍🏫 Google Classroom ready — copy the link straight into your assignment. Print as many copies as your class needs.

🔓 Also available as part of the Complete Lesson Pack, bundled with extension activities. Save £1 buying the pack (£3 + £3 = £6 separately, £5 together).

Price: £3