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Excretory System

ICSE · Class 10 · Biology

Step-by-step guide to study Excretory System in ICSE Class 10 Biology. Topics to cover, practice strategy, and time allocation.

40 questions35 flashcards5 concepts

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A labeled diagram of the human excretory system, showing the kidneys, ureters, urinary bladder, and urethra, along with major associated blood vessels (aorta, vena cava).
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Study Plan

1
Day 1–2

Learn the Theory

Read the textbook chapter carefully. Note down definitions, formulas, and key concepts.

2
Day 3

Practice Problems

Solve textbook exercises and additional practice questions. There are 40 questions available for this chapter.

3
Day 4

Revise & Test

Revise key formulas and concepts without looking at notes. Take a practice quiz to test your understanding. Mark weak areas for re-revision.

4
Day 7

Spaced Revision

Revisit Excretory System after a week. Use flashcards for quick recall. Solve previous year questions from this chapter.

What to Focus On

  • Excretion removes metabolic wastes.
  • It prevents harmful accumulation of wastes.
  • It helps maintain homeostasis.

  • Human excretory system has two kidneys, two ureters, one bladder and one urethra.
  • Kidneys are bean-shaped and lie below the diaphragm.
  • The right kidney is slightly lower than the left kidney.

  • Kidney has cortex and medulla.
  • Cortex is dark-coloured and medulla is light-coloured.
  • Medulla is divided into 10 to 12 lobes.

Common Mistakes to Avoid

The ureter carries urine from the bladder to the outside.

The right kidney lies higher than the left kidney.

Ultrafiltration and selective reabsorption mean the same thing.

Memory Tips

Definition of excretion

Main excretory organs in humans

Human excretory system organs

Kidney position and protection

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Frequently Asked Questions

What are the important topics in Excretory System for ICSE Class 10 Biology?
Excretory System covers several key topics that are frequently asked in ICSE Class 10 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 System — ICSE Class 10 Biology?
Understand the core concepts first, then work through the 40 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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