Excretory System
ICSE · Class 10 · Biology
Most important questions from Excretory System for ICSE Class 10 Biology board exam 2026. MCQs, short answer, and long answer questions with marks.
Interactive on Super Tutor
Studying Excretory System? Get the full interactive chapter.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for important questions and more.
1,000+ Class 10 students started this chapter today
Learn better with visuals Super Tutor has hundreds of illustrations like this across every chapter — all free to try.
Get startedSample Questions
Which of the following are the main organs of the excretory system in humans?
Show answer
Kidneys, Ureters, Urinary bladder, Urethra
The excretory system consists of two kidneys, two ureters, one urinary bladder, and one urethra. The heart is part of the circulatory system, not the excretory system.
The first step in urine formation is ultrafiltration.
Show answer
True
Ultrafiltration is indeed the first step in urine formation, followed by selective reabsorption and tubular secretion. It occurs in the glomerulus due to high hydrostatic pressure.
Which of the following substances are normally reabsorbed by the proximal convoluted tubule?
Show answer
Glucose, Water, Sodium, Amino acids
The proximal convoluted tubule reabsorbs useful substances like glucose, water, sodium, amino acids, potassium, bicarbonates, and phosphate. Creatinine is a waste product that is secreted, not reabsorbed.
Besides kidneys, which organs also help in excretion?
Show answer
Skin, Lungs, Liver, Large intestine
Skin excretes water and salts through sweat, lungs remove CO2 and water vapor, liver processes waste into urea and bile pigments, and large intestine removes undigested food and water. Stomach is mainly involved in digestion.
+39 more questions available
Practice AllFrequently Asked Questions
What are the important topics in Excretory System for ICSE Class 10 Biology?
How to score full marks in Excretory System — ICSE Class 10 Biology?
How many important questions are there in Excretory System?
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
More resources for Excretory System
Syllabus
What topics to cover
Revision Notes
Key points for last-minute revision
Study Plan
Step-by-step plan to ace this chapter
Flashcards
Quick-fire cards for active recall
Formula Sheet
All formulas in one place
Chapter Summary
Understand the chapter at a glance
Practice Quiz
Test yourself with a quick quiz
Concept Maps
See how topics connect visually
NCERT Solutions
Every textbook question solved step by step
For serious students
Get the full Excretory System chapter — for free.
Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for ICSE Class 10 Biology.