Excretory Products and Their Elimination
Trending Questions
Q.
Which of the following are metabolic wastes of protein metabolism?
Ammonia, urea and creatinine
Urea, oxygen and N2
Nitrogen, urea and CO2
Urea, NH3 and CO2
Q.
Reabsorption of useful substances from the glomerular filtrate occurs in
Collecting duct
Loop of Henle
Proximal convoluted tubule
Distal convoluted tubule
Q.
Excretory organs in Periplanata are:
nephridia
flame cells
solenocytes
Malpighian tubules
Q. Metabolic processes create toxic by-products; many of which contain nitrogen. Most freshwater fish will excrete the nitrogenous waste across their gills as ammonia. Since this will decrease the osmolarity of the freshwater fish, which of the following must the freshwater fish perform to maintain homeostasis?
- Production of uric acid to condense the ammonia waste and prevent water loss.
- Increasing temperature since ectothermic fish are dependent on heat for excretory systems to properly function.
- Uptake of sodium from the water through the gills to restore fluids to isotonic levels.
- Increase synthesis of proteins and nucleic acids, since nitrogenous waste products, such as ammonia, are produced through dehydration synthesis of these macromolecules.
Q. The following substances are the excretory products in animals. Choose the least toxic form among them.
- Urea
- Uric acid
- Ammonia
- Both b and c
Q.
in which form does a soyabean plant transport nitrogen?
Q. Which of the following is correct with respect to salt balance in body?
- When water is not available, camels do not produce urine but store urea in tissues
- Salmon fish excretes lot of stored salt through gill membrane when in fresh water.
- Paramoecium discharges concentrated salt by contractile vacuole
- Body fluids of fresh water animals are generally hypotonic to surrounding water
Q. how do gills in mollusca helps in excretion ?
Q. what are the merits and demerits of mass flow model?
Q.
what is the difference between somatostatin and somatotropin ?
