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Important Questions

Excretory Products and Their Elimination

ICSE · Class 11 · Biology

Most important questions from Excretory Products and Their Elimination for ICSE Class 11 Biology board exam 2026. MCQs, short answer, and long answer questions with marks.

56 questions58 flashcards5 concepts

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An infographic comparing ammonia, urea, and uric acid based on their relative toxicity and the amount of water required for their excretion.
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56 Questions·
multiple choice

Sample Questions

1multiple choice

Which part of the nephron has a brush border (microvilli)?

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c

The PCT (proximal convoluted tubule) is lined with microvilli (brush border), greatly increasing surface area for maximum reabsorption. Therefore, the correct answer is option (3) PCT.

2multiple choice

Glucose is normally absent in urine because it is:

Show answer

b

Glucose is completely reabsorbed in the proximal convoluted tubule (PCT) by active transport. Glycosuria indicates blood glucose exceeds renal threshold. Therefore, the correct answer is option (2) Completely reabsorbed in the PCT.

3multiple choice

Which organ produces urea in the human body?

Show answer

c

Urea is produced in the liver via the ornithine cycle (urea cycle) from ammonia generated by deamination of amino acids. Therefore, the correct answer is option (3) Liver.

4multiple choice

The renal threshold for glucose is approximately:

Show answer

c

When blood glucose exceeds ~180 mg/dL, the PCT cannot reabsorb it all, and glucose appears in urine (glycosuria). Therefore, the correct answer is option (3) 180 mg/dL.

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Frequently Asked Questions

What are the important topics in Excretory Products and Their Elimination for ICSE Class 11 Biology?
Excretory Products and Their Elimination covers several key topics that are frequently asked in ICSE Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Excretory Products and Their Elimination — ICSE Class 11 Biology?
Understand the core concepts first, then work through the 56 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many important questions are there in Excretory Products and Their Elimination?
There are 56 practice questions available for Excretory Products and Their Elimination. These cover multiple question types including MCQs, short answer, and long answer questions.

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