CBSE Class 11 Biology – Excretory Products and Their Elimination

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11th

11th - Biology

Excretory Products and Their Elimination

Chapter Overview

This chapter discusses the types of excretory products formed in animals, the human excretory system, and its functional units – nephrons. It explains urine formation, osmoregulation, and various excretory mechanisms in other organisms. The chapter also covers common disorders of the excretory system.

Important Keywords

  • Excretion: Process of removal of metabolic wastes from the body.
  • Ammonotelic: Animals that excrete ammonia (e.g., aquatic amphibians, bony fishes).
  • Ureotelic: Animals that excrete urea (e.g., humans, amphibians).
  • Uricotelic: Animals that excrete uric acid (e.g., birds, insects).
  • Nephron: Structural and functional unit of the kidney.
  • Bowman’s Capsule: Cup-shaped structure that encloses the glomerulus for filtration.
  • Glomerular Filtration Rate (GFR): Volume of filtrate formed per minute by the kidneys.
  • Osmoregulation: Regulation of water and salt balance in the body.
  • ADH: Hormone that helps regulate water absorption in kidneys.

Detailed Notes

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