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NCERT Books Free Download for Class 11 Biology Chapter 19 - Excretory Products and their Elimination

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Last updated date: 25th May 2024
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NCERT Books for Class 11 Biology Chapter 19 -Free PDF Download

Free NCERT Books download for Class 11 Biology Chapter 19 - Excretory Products and their Elimination on Vedantu. Students can also download the NCERT Textbooks Solutions in PDF for Class 11 Biology Chapter 19 - Excretory Products and their Elimination. Register for Biology tuition to clear your doubts and score more in your exams.


Question: How to download Class 11 Biology Chapter 19 NCERT Book for CBSE?

Answer: Students can download it from Vedantu. On this page, Students can download Class 11 Biology Chapter-19 PDF Solutions of the Book.

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Vedantu’s NCERT Books for Class 11 Biology Chapter 19

When it comes to Class 11 Biology, there are 22 chapters in total in the NCERT textbook. Starting with an introduction to the living world, the book covers a plethora of topics like plant morphology and anatomy, biological classification, the human body, etc. Biology can be a deciding factor in exams like KVPY and NEET. Thus, for students aiming to crack competitive exams, building a good foundation in this subject is of prime importance. Fret not, because Vedantu has got you covered. 


What’s Included in Chapter 19 of Class 11 Biology?

You will find everything on Vedantu’s website ranging from NCERT Solutions for Class 11 Biology to Important Questions for CBSE Class 11 Biology. Chapter 19 specifically, deals with the human excretory system. It provides an overview of the excretory organs present in humans after which the structure and function of these organs are discussed. The various steps of renal filtration are discussed in great detail which helps students in understanding the physiology of the body.


Myogenic mechanisms that regulate the flow of glomerular filtrate are also mentioned in brief. In addition to this, clinical disorders that can be identified upon urine analysis are explained. You can solve sample papers to get an idea about the kind of questions that are generally asked in examinations. Solving papers will also help you acquire the skills of time management and memory retention.

FAQs on NCERT Books Free Download for Class 11 Biology Chapter 19 - Excretory Products and their Elimination

1. How is Vedantu helpful for Class 11 Biology?

Experts specially curate the study material found on Vedantu. This is why it is the most trustworthy academic site used by lakhs of students. You can download Vedantu’s app too to check out all that they have to offer. A detailed explanation of all the chapters is provided alongside the important questions that can be asked from it. In case of any doubts, you can ask experienced teachers for help. Sample papers and revision notes have also been provided to enable students to pass their exams with flying colours.

2. What are the most important topics of Chapter 19 of Class 11 Biology?

Chapter 19 of NCERT Biology - Excretory Products and their Elimination deals with waste and the process of its excretion from the human body. The most important topics covered in the chapter are the structure of the kidney, the steps of urine formation, counter-current mechanisms, and the JuxtaGlomerular (JGA) apparatus. You have to be familiar with the products that are excreted, secreted, and reabsorbed. The diagrams from this chapter are also quite important. Often, students are also asked diagram-based questions.

3. What are the steps of urine formation?

There are three main steps involved in the process of urine formation. The first step is the filtration of blood, which is carried out by the glomerulus and is thus termed glomerular filtration. It is a type of ultrafiltration done under great hydrostatic pressure. Only plasma from the blood is allowed to enter the renal tubules. The plasma proteins are also left behind. The other two processes are namely reabsorption and secretion, and these take place in different parts of the nephron such as the Henle’s loop, PCT, and DCT.

4. Enumerate the functions of the proximal and distal convoluted tubules.

The proximal convoluted tubule (PCT) works to increase the surface area for reabsorption. A huge chunk of electrolytes and water is reabsorbed from this segment of the nephron. Selective secretion of hydrogen ions, ammonium ions, and potassium ions into the filtrate is also carried out by the PCT. On the other hand, conditional reabsorption of Na+ and water takes place in the distal convoluted tubule (DCT). However, the main function of DCT is to maintain the pH of blood alongside the sodium-potassium balance.

5. How do you treat acute renal failure?

In the initial stages of renal failure, dialysis is suggested. In dialysis, blood is drained from an artery and is then pumped into a dialysing unit after the addition of an anticoagulant. The most common anticoagulant used in modern practice is heparin. However, in severe cases, the only method of treatment is a kidney transplant. A functioning kidney is obtained from an eligible donor, generally a close relative. This minimizes the chance of rejection by the immune system of the host.