Assertion : The antidiuretic hormone increases the water permeability of distal convoluted tubule.
Reason : In absence of ADH, water re-absorption is considerably reduced.
Assertion : In the descending limb of loop of Henle, the urine is hypertonic, while in ascending limb of loop of Henle, the urine is Hypotonic.
Reason : Descending limb is impermeable to Na+, while ascending limb is impermeable to H2O.
Which of the following nitrogenous wastes is most toxic form and requires a lot of water for removal?
1.Ammonia
2.Urea
3.Uric acid
4.Creatinine
Which of the following nitrogenous wastes is least toxic?
1.Uric Acid
2.Urea
3.Creatinine
4.Ammonia
Ammonotelic organisms are not
1.Bony Fishes
2.Aquatic Amphibians
3.Aquatic Insects
4.Marine fishes
Ammonotelic organisms excrete out
1.Ammonia
2.Ammonium ions
3.Ammonium sulfate
4.Ammonium nitrate
The production of urea and uric acid is because of
1. Conservation of water
2. Terrestrial adaptation
3. Terrestrial adaptation for conservation of water
4. Advancement of organism in comparison to all water animals
Ammonia is converted into urea in which of the following organs of Ureotelic organisms?
1.Liver
2.Kidney
3.Urinary bladder
4.Gut
Urea remains in the kidney matrix of which of the following organisms?
1.Aquatic Insects
2.Aquatic amphibians
3.Bony fishes
4.Marine fishes
Kidney matrix retains some amount of urea to
1.Maintain a desired osmolarity
2.Maintain metabolism
3.Maintain balance of the body
4.Maintain micturition