Excretory System: JAMB Physical and Health Education Questions, Answers & Notes

What Excretory System covers in the JAMB Physical and Health Education syllabus

Excretion is the removal of waste products from the body, and the kidneys are the main organs of excretion. Several organs excrete different wastes: the kidneys remove waste from the blood and form urine; the skin excretes waste, salts and water as sweat (which also cools the body); the lungs excrete carbon dioxide and water vapour when we breathe out; and the liver removes harmful/toxic substances (detoxification). In the urinary path, urine formed in each kidney passes down a ureter to the bladder, where it is stored, and then leaves the body through the urethra. Excretion helps keep the body's internal environment balanced and free of harmful waste. The main point: the excretory system removes waste products through the kidneys (urine), skin (sweat) and lungs (carbon dioxide).

For Excretory System, JAMB expects you to be able to:

• Define excretion (removal of waste) and the main organs (kidneys)
• Recall the excretory organs and their wastes (kidneys/urine, skin/sweat, lungs/CO2, liver/toxins)
• Trace the urinary path (kidney → ureter → bladder → urethra) and the role of balancing the body

Key facts & revision notes: Excretory System

These are the recurring points our Excretory System questions test — revise them until each feels automatic, then practise the questions above to lock them in.

• Excretion is the removal of waste products from the body.
• The kidneys are the main organs of excretion.
• The kidneys remove waste from the blood and form urine.
• The skin excretes waste, salts and water in the form of sweat.
• The lungs excrete carbon dioxide (and water vapour) during breathing out.
• Urine is stored in the bladder before being passed out.
• Urine passes from each kidney to the bladder through the ureter.
• Urine leaves the body from the bladder through the urethra.
• Excretion helps keep the body's internal environment balanced and free of harmful waste.
• The liver removes harmful/toxic substances (detoxification) and processes wastes.
• The kidney removes waste and forms urine.
• Sweat is excreted through the skin.
• The skin is an organ of excretion (it excretes sweat).
• Sweating also helps to cool the body.
• Carbon dioxide is excreted by the lungs.
• Urine is stored in the bladder.
• The kidneys filter waste from the blood.
• The main point is that the excretory system removes waste products from the body through the kidneys (urine), skin (sweat) and lungs (carbon dioxide).

Worked examples

Three Excretory System questions with the answer and a short explanation, so you can see how the topic is set before you practise the full set.

How Excretory System is tested in JAMB Physical and Health Education

Our Excretory System bank holds 20 questions (3 easy, 12 medium, 5 hard). JAMB Physical and Health Education typically returns to Excretory System year after year, so steady practice on this topic is high-value revision. Questions are multiple-choice with four options, and at UTME pace you get roughly 40 seconds each — which is why timed practice matters.

How to answer Excretory System questions

Work the stem first and predict the answer before you look at the options; then eliminate the ones that contradict the key facts above. Watch for “which is not…”, “all of the above” and “except” style stems, which are where rushed candidates lose easy marks on Excretory System. If a calculation or a precise definition is involved, work it from first principles rather than guessing from a half-remembered rule. When two options look right, re-read the stem for the qualifier that separates them — JAMB rarely repeats an option by accident. If you are still unsure, eliminate the two weakest choices to lift your odds, flag the question, and move on; never burn a full minute on one Physical and Health Education item when the exam gives you about forty seconds each. Then come back to flagged questions with whatever time remains. The single most reliable way to get faster at Excretory System is repeated timed practice, so use the button above until the recurring patterns feel automatic.

Common mistakes to avoid in Excretory System

The errors that cost marks on Excretory System are usually careless rather than conceptual: misreading a negative stem, confusing two similar terms, or rushing a definition you actually know. Candidates also over-rely on “expo” and last-minute cramming instead of understanding the topic — which fails the moment JAMB rephrases a familiar idea. Treat every option as a claim to be checked against the facts above, keep your working tidy for any calculation, and don’t change a considered answer on a hunch. Above all, revise Excretory System actively by answering questions, not just by re-reading notes — recall under time is what the exam rewards.

Frequently asked questions

Is Excretory System part of the JAMB Physical and Health Education syllabus?

Yes. Excretory System is a recognised topic in the JAMB Physical and Health Education syllabus, covering define excretion (removal of waste) and the main organs (kidneys). You should be able to recall its key facts and apply them to multiple-choice questions.

How many Excretory System questions can I practise on Belmadeng?

There are 20 original, JAMB-standard Excretory System questions in our free bank, each with the correct answer and a worked explanation. You can practise them untimed or as a timed test.

What are the most important points to know about Excretory System?

Excretion is the removal of waste products from the body, and the kidneys are the main organs of excretion. Several organs excrete different wastes: the kidneys remove waste from the blood and form urine; the skin excretes waste, salts and water as sweat (which also cools the body); the lungs excret…

How do I answer Excretory System questions quickly in JAMB?

Read the stem carefully, eliminate clearly wrong options, and match the remaining choices to the key facts for Excretory System. Practising timed Excretory System questions builds the speed you need for UTME's pace of about 40 seconds per question.

Are these JAMB Physical and Health Education Excretory System questions past questions or original?

They are original questions written to JAMB (UTME) standard and mapped to the official syllabus — not reproduced past papers. This keeps them legal to use freely while closely mirroring how the real exam tests the topic.

Where can I practise Excretory System questions free without signing up?

Right here — tap “Start Excretory System practice” on this page to begin instantly. Belmadeng's CBT practice is completely free and needs no sign-up, download or subscription.

About these questions: original, JAMB-standard items written from the official UTME Physical and Health Education syllabus (last reviewed 2026-09-18). Belmadeng is an independent study platform and is not affiliated with JAMB. Spotted an error? Use the report link.