Q.
In Amoeba, the conversion of plasma gel into plasma sol at the trailing end and the conversion of plasma sol into plasma gel at the advancing end explains
Sol gel theory as proposed by Hyman (1917), supported by Schaudinn and others, and as explained by Pantin ( 1923) and Mast (1926, 1931) postulates four steps in the locomotion of Amoeba:
(i) Contact of plasmalemma ofadvancing end with the substratum and weakening of plasma gel layer at this place due to partial solation.
(ii) Sudden forward streaming of plasmasol under tension so that weakened plasma gel sheet is broken and is converted into gel after striking against the hyaline cap.
(iii) Conversion of plasma gel into plasma gel in trailing part of the body.
(iv) Contraction in the liquefying plasma sol at the rear end