Describe amoeboid protozoans.

(N/A) $\rightarrow$ These organisms live in freshwater,seawater,or moist soil.
$\rightarrow$ They move and capture their prey by extending $Pseudopodia$ (false feet),as seen in $Amoeba$ (since a mouth is absent).
$\rightarrow$ Marine forms often have silica shells on their surface.
$\rightarrow$ Nutrition is holozoic.
$\rightarrow$ Some species,such as $Entamoeba$,are parasites.
$\rightarrow$ Asexual reproduction occurs by binary fission,multiple fission,or spore formation,while sexual reproduction occurs by syngamy.
$\rightarrow$ Examples: $Amoeba$,$Entamoeba$,$Radiolarians$,$Pelomyxa$,$Foraminiferans$,and $Heliozoans$.