Question

A student collected water sample from water body and took it to the bio lab. There he observed that it had microorganisms 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 extensions are these and explain about it.

Answer 1

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