Urine is concentrated in

• kidney

• deamination

• arginine

•  Omithine

The canal system is a characteristic feature of

• Echinoderms

• Helminths

• Coelenterates

• Sponges

The net pressure gradient that causes the fluid to filter out of the glomeruli into the capsule is

• 20 mm Hg

• 75 mm Hg

• 30 mm Hg

• 50 mm Hg

Major nitrogenous waste product in ureotelic animals like rabbit and other mammals is

• uric acid

•  urea

•  ammonia

• amino acids

Solenocytes are the main excretory structures in

• Annelids

• Molluscs

• Echinodermates

• Platyhelminthes

Uric acid is the excretory waste of

• Adult amphibians

• Birds

• Amphibians Larvae

• Mammals

Which is regarded as the urinary bladder of the embryo?

• Amnion

• Allantois

• Chorion

• Yolk sac

Which leaves the liver and moves towards kidney

• Ammonia

• Urea

• Glycogen

• Bile

Pyloric sphincter guards the opening between

• Stomach and Duodenum

• Cardia and Fundus

• Oesophagus and Stomach

• Fundus and Pylorus

A condition of failure of kidney to form urine is called

• Deamination

• Entropy

• Anuria

• None of these