NCERT Solutions for Class 11 Biology Chapter 19 - Excretory Products and their Elimination
FAQs on NCERT Solutions for Class 11 Biology Chapter 19 - Excretory Products And Their Elimination
1. What is Meant by Glomerular Filtration Rate and its Self-regulatory System?
Kidneys direct the glomerular filtration rate through the instrument which is auto administrative. It includes the activity of the juxtaglomerular mechanical assembly, which is an infinitesimal structure present between the returning distal tangled tubule and vascular post of the renal corpuscle of a similar nephron. It directs the glomerular filtration rate and renal bloodstream. At the point when the glomerular filtration rate decreases, the juxtaglomerular cells are enacted for the arrival of renin. This triggers the glomerular bloodstream making the GFR return to typical. Renin makes GFR return to regularity by enacting the renin-angiotensin system.
2. What Does Micturition Mean? What is the Amount of Urine Excreted by Humans Per Day?
Micturition is the cycle by which the urine from the urinary bladder is discharged. As the urine collects, the solid dividers of the bladder extend. The dividers invigorate the tactile nerves in the bladder, setting up a reflex activity. This reflex animates the desire to pass out the urine. To release it, the urethral sphincter unwinds and the smooth muscles of the bladder contract. This powers the urine out from the bladder. A grown-up human discharges around 1 – 1.5 liters of urine every day.
3. Define Glomerular Filtration Rate (GFR).
Glomerular Filtration Rate (GFR) is a test to know how the kidneys are functioning. This will measure the level of creatinine in the blood. The results are further used in the formula to calculate a number that indicates the function of the kidney. This is called the estimated GFR or eGFR.
4. Explain the autoregulatory mechanism of GFR.
Glomerular Filtration Rate is regulated by the kidneys, which are autoregulatory. The apparatus used is juxtaglomerular. The glomerular filtration rate and the renal blood flow is regulated by this. When the glomerular filtration rate is declined, the release of renin takes place with the activation of the juxtaglomerular cell. This helps in triggering the glomerular blood flow, which causes GFR to be normal. The GFR comes to normal because of the ronin, which activates the angiotensin mechanism.
5. Why should I learn Chapter 19 of NCERT Solutions for Class 11 Biology thoroughly?
Chapter 19 for Class 11 Biology from NCERT Solutions is very useful. They are formatted in an organized manner. The solutions are easy to understand. If the preparation from NCERT Solutions is done thoroughly, it is very easy to score marks and also, the NCERT is very useful in the preparation of competitive exams.
6. Do the NCERT Solutions for Class 11 Biology Chapter 19 provide accurate answers?
Yes, Chapter 19 for Class 11 Biology from NCERT Solution provides accurate answers. These are easy to understand, and practicing these answers will help students to know the correct way of writing the answers. The extra questions and the MCQs help you prepare the subject in the best possible way. This is the best guide, and one can rely upon it with full confidence. The notes are useful and precise, especially at the time of revision. The solutions are available for free on the Vedantu website as well as the Vedantu Mobile app.
7. Explain the role of lungs in excretion from Chapter 19 of NCERT Solutions for Class 11 Biology.
In Chapter 19 for Class 11 Biology from NCERT Solution, the lungs help in expelling carbon dioxide. The elimination of carbon dioxide is approximately 200ml per minute. Along with carbon dioxide, even water is eliminated in the form of vapor. The loss of water is increased in colder conditions and decreases in humid conditions. During this process of elimination, many volatile materials also get eliminated.