Question

Very small organisms, like paramecia or protozoa, moving around in water. Explain the movement of these organisms and the forces involved in their motion.

Answer 1

Small organisms like paramecia or protozoa move in water using flagellar movement, cytoplasmic streaming, or reshaping their form with pseudopodia. The forces involved in their motion include the beating of cilia or flagella, the flow of cytoplasm, and manipulation of boundaries.

Step-by-step explanation:

The movement of small organisms like paramecia or protozoa in water is achieved through various mechanisms. Some use flagellar movement, where they rotate or whip their flagella. Others move by pushing and pulling on their boundary using microtubules, similar to amoebae or slime molds. There are also protists that move using pseudopodia, which are cytoplasmic extensions that they anchor to a substrate and pull themselves forward with. The forces involved in their motion include the beating of cilia or flagella, the flow of cytoplasm, and the manipulation of boundaries to change shape and move.