Zoology blog for EAMCET Students
Sir, Actually i am having a doubt about isotonic medium in which entamoeba lives and because of that reason it does not have any contractile vacuoles.I could not understand what is a isotonic medium.
Isotonic means "same concentration". As parasites live in isotonic medium i.e. the concentration of the medium is same as that of the cytoplasm, there is no osmosis of water from the outer medium into the cell. Hence there is no need of expulsion of water by contractile vacuoles.
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sir, what is meant by "inoculate"which is given as a adaptation in leshmania donovani and i also want to know about the number of karyo and cytokineses that occur in uni .bi and tetranucleate cysts of entamoeba
Inoculate means "to introduce a serum, vaccine, or antigenic substance into the body of a person or animal" e.g. Plasmodium is inoculated into the blood of man by mosquito bite.One uninucleate cyst undergoes karyokinesis (no cytokinesis) to produce one binucleate cyst which undergoes karyokinesis (no cytokinesis)to produce one tetranucleate cyst. Tetranucleate cyst undergoes neither karyokinesis nor cytokinesis. It excysts to produce metacystic form which undergoes both karyokinesis and cytokinesis to produce amoebulae.
thank you very much sir
thnk u sir
sir plz publish the def of similar terms that we confus like homeostatis and haemostatisdiapedesis sea star seapene.t.c