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NCERT Exemplar Class 11 Biology Chapter 19 Solutions: Excretory Products and their Elimination

NCERT Exemplar Solutions for Class 11 Biology Chapter 19 illustrates a human excretory system. In this chapter of NCERT Exemplar Class 11 Biology, you will also learn about the function of the tubules, regulation of kidney function, the role of other organs in excretion, urine formation, micturition, mechanism of concentration of the filtrate, and disorders of the excretory system.

This chapter consists of 4 exercises with a total of 45 exemplar problems. To help you find the right answer to all the questions, we are providing here the NCERT Exemplar Problems with Solutions for Class 11 Biology Chapter 19 prepared by our subject matter experts. Practising the questions of this chapter will help you to score good marks in the CBSE exams as well as entrance exams.

All these NCERT Exemplar solutions are prepared by expert teachers of Biology who are very experienced. A complete explanation of each question is given in the solutions and they are written in the simplest language so that you can understand the same with ease. We have undergone thorough research to get accurate solutions for you. Follow now and you can access them for free!

Important Topics for NCERT Biology Exemplar Solutions Class 11 Chapter 19 – Excretory Products and their Elimination

Excretion

The method of removing or eradicating waste products of metabolism and other non-useful resources from a body of a living organism is known as the Excretion. The complete process of elimination of wastes is measured by the excretory system.

Human Excretory System

Life of every living creature depends on various elementary processes. Excretion is common among them. Different living creatures follow various modes of excretion. In complex organisms involving humans, there is a particular system for excretion known as the human excretory system.

Excretory System Organs

The human excretory system organs include the following:

  • A urethra
  • A pair of kidneys
  • A pair of ureters
  • A urinary bladder

Egestion

Organisms ingest food for growth, survival, and repair. Most of the food is consumed and exploited by the body for the creation of energy; the rest is excluded from the body by the digestive system in the form of faeces. This procedure is NOT termed as excretion, however; it is called egestion.

Modes of Excretion

Based on the excretory product, there are five modes of excretion which are seen in animals. They include:

  • Ammonotelism
  • Ureotelism
  • Uricotelism
  • Aminotelism
  • Guanotelism

Excretion and Its Importance

The method by which animals clear themselves of waste products is known as excretion. Wastes can comprise of nitrogenous by-products and metabolic waste products including carbon dioxide, ammonia, sweat, excess water, excess salts, urine, and faeces.

The living creatures control osmotic pressure – the balance between inorganic ions and water and preserve acid-base balance through this method. It also helps in upholding homeostasis, a procedure that helps preserve the stability that helps the organs or biological systems to endure.

Process of Micturition

Micturition is also known as urination. It is the procedure of ejecting urine from the bladder. This act is also called a voiding of the bladder. The method of micturition is controlled by the nervous system and the muscles of the bladder and urethra. The urinary bladder can supply around 350-400ml of urine before it ejects it out.

Exercise-wise Discussion of NCERT Biology Exemplar Solutions Class 11 Chapter 19 – Excretory Products and their Elimination

Exercise 1 –Multiple Choice Questions (MCQs)

Exercise 1 of Chapter 19 Biology contains a total of 15 exemplar problems with solutions. These questions are based on the main topics of the chapter including the human excretory system, the function of the tubules, and regulation of kidney function.

Exercise 2 – Very Short Answer Type Questions

It contains 15 very short answer type questions. These are generally high order thinking questions and are prepared to help you test your analytical skills.

Exercise 3 –Short Answer Type Questions

Exercise 3 of NCERT Exemplar Class 11 Biology contains 9 exemplar problems with solutions. Follow now for your better understanding of the concept.

Exercise 4 –Long Answer Type Questions

This exercise consists of a total of 6 long answer type questions based on the role of other organs in excretion, urine formation, micturition, mechanism of concentration of the filtrate, and disorders of the excretory systems. Practice well to clear your concepts.

Why Use NCERT Biology Exemplar Solutions Class 11 Chapter 19 – Excretory Products and their Elimination by Instasolv?

The NCERT Exemplar for Class 11 Biology Chapter 19 is completely based on the modern syllabus of Class 11 Biology. They are prepared by the expert Biology teachers and consist of easy to understand answers of all the exemplar problems. In addition, they are the finest way to go about the preparation of the exam. So, in light of these benefits, follow the NCERT Exemplar Solutions provided by Instasolv at any time and from anywhere. Also, you can access these solutions for free.