Sea gulls excrete excess of NaCl from
liver
lungs
nasal activity
kidney
C.
nasal activity
Sea gulls have salt glands which excrete large loads of salt taken with their food and with the water they drink. Sea water contains 3% salt which is three times saltier than a bird's body fluid.
Salt glands are located above each eye and consists of several lobes arranged parallely. Salts are secreted into many radially arranged tubules then flows into a central canal that leads into the nose.
Animals having a built in thermostat to maintain constant body temperature are known as
biothermic
poikilothermic
oligothermic
homeothermic
Which of the following cell type is capable of giving rise to other cell types in sponges?
Thesocytes
Pinacocytes
Cnidocytes
Archaeocytes
