Class 11 Biology — Chapter 16: Excretory Products and Their Elimination
60 practice questions · 20 Easy · 20 Medium · 20 Hard
Practise Class 11 Biology Chapter 16, "Excretory Products and Their Elimination", with 60 NCERT-aligned multiple-choice questions. The set is split into 20 Easy, 20 Medium and 20 Hard questions, so you can warm up on the fundamentals and then push into the exam-level problems that separate top scorers in CBSE Board exams and NEET UG.
"Excretory Products and Their Elimination" is one of the chapters where diagram-based recall, terminology and NCERT line-by-line accuracy really pays off. Each MCQ on this chapter is timed and uses exam-grade marking (+2 correct, −1 wrong, 0 skipped), training the same accuracy-under-pressure that real papers demand. Every question carries a short explanation, so a wrong answer becomes a quick lesson rather than a dead end — the fastest way to close gaps before a test.
Use this chapter as targeted revision: attempt the Easy set first to confirm your basics on Excretory Products and Their Elimination, then move to Medium and Hard to test application and problem-solving. Your accuracy, streaks and XP save automatically, and the chapter feeds into your overall Class 11 Biology mastery score. A few sample questions are shown below; sign in free to practise all 60.
Key concepts: Excretory Products and Their Elimination (Class 11 Biology)
This chapter covers excretion in humans — the structure of the kidney and nephron, urine formation, and the regulation of kidney function.
- Modes of excretion
- Animals are ammonotelic (ammonia), ureotelic (urea, humans) or uricotelic (uric acid) depending on water availability.
- Excretory system
- Two kidneys, ureters, urinary bladder and urethra; the nephron is the functional unit.
- Urine formation
- Three steps: glomerular filtration, tubular reabsorption and tubular secretion.
- Concentrating urine
- The loop of Henle and counter-current mechanism conserve water and concentrate urine.
- Regulation
- ADH, the renin–angiotensin system and ANF regulate kidney function and blood pressure; dialysis treats kidney failure.
💡 Exam tips for Excretory Products and Their Elimination
- Remember the three steps of urine formation in order: filtration → reabsorption → secretion.
- Humans are ureotelic (excrete urea) — a balance between water loss and toxicity.
Sample questions
Functional unit of kidney:
~1 million nephrons per kidney.
Glomerular filtration occurs in:
Blood pressure forces filtrate into capsule.
Renin is released by kidney to regulate:
Renin-Angiotensin-Aldosterone system.
Excretory Products and Their Elimination — FAQs
What are the key concepts in Class 11 Biology Excretory Products and Their Elimination?+
This chapter covers excretion in humans — the structure of the kidney and nephron, urine formation, and the regulation of kidney function. Key ideas include Modes of excretion, Excretory system, Urine formation, Concentrating urine, Regulation.
What does Class 11 Biology Chapter 16 (Excretory Products and Their Elimination) cover on XamBaaz?+
It covers 60 NCERT-aligned MCQs on "Excretory Products and Their Elimination" — 20 Easy, 20 Medium and 20 Hard — each with a timed quiz and an instant explanation, suitable for CBSE Board exams and NEET UG.
Are these "Excretory Products and Their Elimination" questions free to practise?+
Yes — sign in with Google to practise "Excretory Products and Their Elimination" free. Full unlimited access is ₹999/year (limited-time launch price), with no per-chapter charges.
How should I revise "Excretory Products and Their Elimination" for the exam?+
Start with the Easy quiz to confirm your fundamentals, then attempt Medium and Hard for application-level practice. Review each explanation, retry the questions you miss, and track your accuracy on this chapter until it is consistently high.
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