explain digestion in paramecium in 3 to 5 lines
Answers
A paramecium is a small one celled (unicellular) living organism that can move, digest food, and reproduce. They belong to the kingdom of Protista, which is a group (family) of similar living micro-organisms. Micro-organism means they are a very small living cell. You might be able to see one as a tiny moving speck if your eyesight is extremely good but for any detail at all you need a microscope to look at and study them. They are about .02 inches long (.5mm). They are also famous for their predator-prey relationship with Didinium.Paramecium are known for their avoidance behavior. If an encounters a negative stimiulus, it is capable of rotating up to 360 degrees to find an escape route. Didiniumare heterotrophic organisms. They only have one type of prey; the much larger cilate Paramecium. When a Didinium finds a Paramecium, it ejects poison darts (trichocysts) and attachment lines. The Didinium then proceeds to engulf its prey. Although Paramecium are larger than they are, Didinium are voracious eaters and will be ready to hunt for another meal after only a few hours.
WHAT DOES A PARAMECIUM LOOK LIKE?
The paramecium is an oval, slipper shaped micro-organism, rounded at the front/top and pointed at the back/bottom. The pellicle, a stiff but elastic membrane that gives the paramecium a definite shape but allows some small changes. Covering the pellicle are many tiny hairs, called cilia. On the side beginning near the front end and continuing half way down is the oral groove. The rear opening is called the anal pore. The contractile vacuole and the radiating canals are also found on the outside of a paramecium. Inside the paramecium is cytoplasm, trichocysts, the gullet, food vacuoles, the macronucleus, and the micronucleus. Study the drawing below
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