Euglena usually makes their food by photosynthesis but sometimes they absorb food from their environment. They move around by using a flagella. A flagella is a whip like structure that moves like a motor. Euglena reproduces asexually through binary fission. They respond to their environment by their eyespot that helps detect light.
Amoeba eats food by surrounding tiny particles of food with pseudopods. Pseudopods are things that help an amoeba move, it also moves by changing the shape of its body. Just like an euglena, an amoeba reproduces asexually through binary fission. When an amoeba is placed out of water it turns into a cyst to protect itself for drying out.
A paramecium uses its cilia to sweep the food along with water into the cells mouth after it falls into the oral groove. Cilia are little hair like things that are on the outside of the cell, cilia are what are used to help the paramecium move around. Paramecium can reproduce sexually and asexually but it is mostly an asexual. It responds to its environment by avoidance behavior.
Paramecium Feeding Magnified 400X! High Definition!
A volvox makes their own food through photosynthesis. To move around it has two flagellum which beat together to roll the ball thorough the water. Volvox cells lives in colonies which is how it responds to its environment, when the daughter colonies mature, that is how a new cell is produced (that is how it reproduces).