Here, you'll find important questions related to Chapter 8 The Excretory System For ICSE Class 10 Biology. These questions have been crafted to assist students in their preparation for the ICSE Class 10 Biology Examination in 2023–24. By practising various question types, students can clarify their doubts, enhance their exam readiness, boost their confidence, and refine their problem-solving skills.
The Excretory System is a vital component of the human body, responsible for the removal of waste and excess substances to maintain a healthy internal environment. In the intricate world of biology, understanding this system is crucial, especially for students in Class 10 ICSE. The study of the excretory system not only deepens our comprehension of how our bodies function but also provides valuable insights into the broader field of biology.
In this chapter on the ICSE Class 10 Biology curriculum, we will delve into the intricacies of the excretory system. We will explore its various components, including the kidneys, ureters, bladder, and urethra, as well as the processes of filtration, reabsorption, and secretion. To aid in your comprehensive understanding, we have compiled a collection of biology questions for Class 10 ICSE, specifically focusing on the excretory system. These important questions for Class 10 ICSE Biology serve as valuable tools to assess and reinforce your knowledge, ensuring you are well-prepared for your examinations.
As we journey through the ICSE Class 10 Biology chapter on the excretory system, we invite you to explore the intricacies of waste management in the human body and uncover the answers to the important questions of biology Class 10 ICSE related to this essential physiological process. Join us in unravelling the mysteries of the excretory system and enrich your understanding of the fascinating world of biology.
The excretory system is a critical physiological system in the human body responsible for the elimination of waste products and excess substances to maintain a healthy internal environment. Its primary function is to filter blood, remove metabolic waste products, regulate the balance of essential chemicals in the body, and control the volume and composition of body fluids.
Key organs and structures within the excretory system include:
The excretory system also plays a role in maintaining the body's balance of electrolytes, such as sodium and potassium, and helps regulate blood pressure. Additionally, it is involved in the elimination of certain drugs and toxins from the body.Overall, the excretory system is essential for maintaining homeostasis within the body, ensuring that waste products and harmful substances are efficiently removed, and the internal environment remains stable and conducive to the proper functioning of the body's cells and organs.
Ans. (b) Two kinds of corpuscles, proteins, and large molecules
The thicker part of the blood, left behind after ultrafiltration and is carried by efferent arteriole. The thicker part of blood consists of two kinds of corpuscles, proteins, and large molecules.
During summer water is lost from the body through sweat, more water is reabsorbed from proximal and distal convoluted tubules to maintain balance. Hence urine is slightly thicker in summer than in winter.
Urinary bladder is located in the pelvic cavity, posterior to the symphysis pubis, and below the parietal peritoneum.
Glucose, salt etc. in the glomerular filtrate are reabsorbed in the proximal part of renal tubule.
Constituents of urine : The normal human urine consists of about 95% of water and 5% of solid wastes dissolved in it. The percentage of the solid wastes may slightly vary according to the food taken and according to the time after taking food but usually these are approximately as follows :
Besides the normal constituents, the urine may pass out certain hormones and medicines like antibiotics and the excess vitamins.
The excretory system is an indispensable component of the human body, responsible for the vital task of eliminating waste and maintaining internal balance. As you navigate the complexities of the excretory system in your studies, remember that resources like Oswal.io offer a valuable treasure trove of knowledge. Their comprehensive collection of questions and educational materials provides an excellent aid in your quest to understand the intricacies of the excretory system and biology in general.
Ans : The human excretory system includes all the organs involved in the elimination of wastes such as salts, carbon dioxide and urea produced by the body during homeostasis.
Ans : The important human excretory organs are- kidneys, ureter, urethra, urinary bladder, skin, liver, intestine and lungs.
Ans : The most important fact about the excretory system is that the human bladder can hold up to 400 ml of urine. The blood gets filtered by the kidneys 400 times daily. When the bladder gets filled completely, nerves send the signal to the brain, and we feel the urge to urinate.
Ans : The steps included in the elimination of wastes are- glomerular filtration, reabsorption, and secretion. These processes remove only excess water and waste from the body.
Ans : The important functions performed by the excretory system include- elimination of wastes, eliminate waste byproducts excreted by the cells, prevent the accumulation of harmful chemicals in the body, and maintain a balanced chemical concentration in the body.