A student collected water sample from water body and took it to the bio lab

A student collected water sample from water body and took it to the bio lab. There he observed the microorganisms are present in it He observed one organism with small extension whole over the body and one organism with few long extension over the body. According to above information what hat extensions are these and explain about it

Short extensions are cilia; long extensions are flagella. Cilia and short and numerous and hair-like eilia beat like tiny oars or pedals. Flagella are much longer, fewer and bring about whip-like lashing movement.