Get 100 percent accurate NCERT Solutions for Class 11 Biology Chapter 19 (Excretory Products and their Elimination) solved by expert Biology teachers. We provide solutions for questions given in Class 11 Biology text-book as per CBSE Board guidelines from the latest NCERT book for Class 11 Biology.

NCERT Grade 11 Biology Chapter 19, Excretory Products and their Elimination is from Unit 5, Human Physiology. Animals accumulate ammonia, urea, uric acid, carbon dioxide, water and ions like Na+, K+, Cl–, phosphate, sulphate, etc., either by metabolic activities or by other means like excess ingestion. These substances have to be removed totally or partially. In this chapter, students will learn the mechanisms of elimination of these substances with special emphasis on common nitrogenous wastes.

Human Excretory System, Urine Formation, Function of the Tubules,  Mechanism of Concentration of the Filtrate, Regulation of Kidney Function,  Micturition, Role of other Organs in Excretion and Disorders of the Excretory System are the major topics discussed in this chapter.

Excretion in different animals, structure, location, and function of kidneys in humans, three-step detailed processes of urine formation, accessory excretory organs and disorders of the excretory system such as uremia, kidney stone, kidney failure, etc. are discussed in this chapter.

NCERT Grade 11 Biology, Chapter 19, Excretory Products and their Elimination is a part of Unit 5, Human Physiology. Unit 5 is a combination of 7 chapters and holds a total weightage of 20% in the NEET examination and 18 marks in the final examination.