AMOEBOID LOCOMOTION – SOL-GEL THEORY

*It is also called change of viscosity theory
*It was advocated by Hyman
*It was confirned by Pantin and Mast
*Amoeba attaches to the substratum
*Ectoplasm is formed as hyaline cap at advancing end
*A point of weaknes is formed behind hyaline cap at advancing end
*Plasmasol flows in to advancing end
*Plasma sol is converted in to plasmagel at advancing end by losing water , this zone is called zone of gelation
*Plasmagel gel flows back to uroid end
*Plasma gel is converted into plasma sol by gaining water at uroid end , this zone is called zone of solation
*The rate of gelation and solation is same
*As plasma sol flows towards advancing end the pesupodium extends further
*Amoeba moves on the direction of pseudopodium