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प्रश्न
With regards to toxicity and the need for dilution in water, how different are ureotelic and uricotelic excretions? Give examples of animals that use these types of excretion?
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उत्तर
Ureotelic animals excrete urea with minimum loss of water, e.g., Mammals and terrestrial amphibians. Uricotelic animals excrete uric acid with the least loss of water, e.g., Birds and reptiles.
संबंधित प्रश्न
Explain the autoregulatory mechanism of GFR.
State if the following statement is true or false. Correct the statement if it is false.
The Bowman’s capsule and glomerulus together form the Malpighian body.
Fill in the blank.
When air is humid, the rate of transpiration is ..................
One of the following sets of body parts or substances or processed, pick out the one item which overall includes the remaining foir.
ADH, Water, pituitary, osmoregulation, urine
Write down the functional activity of the following parts,
Urethra ……………………
Define the following term:
Ultrafiltration
Give Reasons for the following:
As a result of ultrafiltration along with excretory products certain useful products like glucose, salt, etc. are also filtered but these are not excreted?
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Glomerular filtrate consists of many substances such as water, salts, glucose and white blood corpuscles.
Answer the following question.
Effective filtration pressure was calculated to be 20 mmHg; where glomerular hydrostatic pressure was 70 mm of Hg. Which other pressure is affecting the filtration process? How much is it?
When a molecule or ion is reabsorbed from the lumen of the nephron, where does it go? If a solute is filtered and not reabsorbed from the tubule, where does it go?
Glomerular filtrate contains ______.
Identify the biological term
Carry urine from the kidneys to the bladder.
What is tubular secretion? Name the substances secreted through the renal tubules.
The osmotic pressure of blood that opposes ultrafiltration is about ______ mm Hg.
First step in urine formation is ______.
What are the main processes of urine formation?
Sort the following into actively or passively transported substances during reabsorption of GFR.
glucose, amino acids, nitrogenous wastes, Na+, water
A large quantity of fluid is filtered every day by the nephrons in the kidneys. Only about 1% of it is excreted as urine. The remaining 99% of the filtrate ______.
