The process of eliminating all the waste products of metabolism and other non-useful materials from a body of an organism is termed as Excretion. The metabolic wastes include carbon dioxide, the excess of water molecules, nitrogenous compounds and are termed as excretory products. These products are eliminated out of our body by the excretory system. The excretory system comprises different organs and it varies in different organisms.
The main components of the human excretory system include:
- A pair of kidneys – They are a dark colored, bean-shaped organs. The size of each kidney is about 11 cm long, 3 cm thick, and 5 cm wide. Each kidney weighs about 135gm in adult female and150gm in an adult male.
- A pair of ureter – They are a white colored tube which emerges out from each kidney. They are about 26-28 cm long and its wall is made up of transitional epithelium and is surrounded by layers of muscle fiber.
- Urinary bladder – A pear-shaped, muscular sac, composed of smooth and involuntary muscles known as detrusor muscles.
- Urethra – It is a tube-like structure that connects the urinary bladder to the urinary meatus for the elimination of urine from the body. The structure of the urethra is different in both male and female.
NCERT solutions for class 11 biology chapter 19 excretory products and their elimination is one of the key tools to prepare biology for class 11th examination. The class 11 NCERT solutions for biology chapter 19 provided here to help students to prepare for their exams in an effective way. The NCERT class 11 biology solutions for chapter 19 Excretory Products and their Elimination is prepared by a team of expert teachers and it covers all the key concepts of the chapter. Check the below pdf files for the NCERT solutions class 11 biology chapter 19 excretory products and their elimination.
Q7: Match the items of column I with those of column II:
Excretory Products and their Elimination one of the most important topic for CBSE class 12 Biology exams. It is one among the high weightage chapters, hence, students are advised to get through in all the concepts related to this chapter by referring to these NCERT solutions. By practicing more questions from these NCERT study materials, students to score good marks in the board exam as it will provide all the basic information about the different types of questions asked, the present exam question paper pattern and the marking scheme. By downloading these pdf files, students can learn other topics related to the excretory system, structure, and functions of the excretory system and its organs. These NCERT solutions are viable for free in pdf format. Those students who like to avail these study materials can either download the pdf files or prepare online by visiting our website at BYJU’S.