Tag: CSIR NET Life Science Previous Year Questions and Solution on Excretory System

The following statements are related to excretion in invertebrates: A. Flame cells are found in molluscs and jelly fish. B. Nephridia and Malpighian tubules convert ammonia to urea for water […]

Glucose is never seen in urine because it is mainly absorbed by (1) Proximal convoluted tubule (2) Collecting duct (3) Ascending loop of Henle (4) Glucose never enter into Bowman’s […]

Concentration of urine in mammals depends on (1) Glomerulus’s size (2) Length of Henley’s loop (3) volume of blood (4) Size of organism Urine concentration is vital for mammals to […]

Uricotellism is an adaptation for (1) Conserving water (2) Conserving salt (3) High altitudes (4) Marine habitats Uricotelism is a specialized form of nitrogenous waste excretion where organisms eliminate nitrogen […]

Among the following which groups of organisms are not uricotelic? (1) Mammals (2) Birds (3) Reptiles (4) Insects In the animal kingdom, the excretion of nitrogenous waste is a critical […]

Which of the following organism predominantly excrete uric acid as nitrogen waste? (1) Human (2) Fish (3) Frog (4) Bird Among vertebrates, the method of nitrogenous waste excretion varies, reflecting […]

Organism adapted to dry xeric environment are likely to be (1) Uricotelic (2) Ureotellic (3) Amminotellic (4) Osmoconformers Living in a xeric environment requires a suite of remarkable adaptations to […]

Arrange the following according to increasing order of concentrated urine (1) Beever<Human<Sand Rat (2) Human<Beever<Sand Rat (3) Sand Rat<Beever<Human (4) Beever<Sand Rat <Human Knowing how animals manage water balance is […]

The excretory waste in birds is uric acid, it suggests that (1) Birds are more advanced (2) Birds are omnivores (3) Birds are adapted for conservation of water (4) Uric […]