Assertion : Birds drink very little water and insects never consume water.
Reason : Birds and insects are uricotelic with negligible water requirement to eliminate nitrogenous waste.
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.
Assertion : Phenylketonuria is a recessive hereditary disease caused by the body’s failure to oxidize an amino acid phenylalanine to tyrosine, because of a defective enzyme.
Reason : It results in the presence of phenylalanine acid in the urine.
Assertion : Diabetes insipidus is marked by excessive urination and too much thirst for water.
Reason : Anti-diuretic hormone (ADH) is secreted by the posterior lobe of pituitary gland.
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