If you compare it with a plant, you will find that it does not have chlorophyll. It is called an animalcule. It used to be called a protozoan. It ingests food and digests like animals. Other functions are like animals. The mode of reproduction is asexual and sexual.It is not a producer in an ecological parlance.Call it an animal.
2007-10-13 08:04:29
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answer #1
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answered by Ishan26 7
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Paramecia are unicellular organisms belonging to the kingdom Protista, so they aren't exactly plants or animals. A paramecium can digest food, move through water by propelling themselves with cilia, and reproduce. As some of the oldest organisms on earth, they have evolved very simple methods of defense, genetic exchange, and mobility.
There are eight different species of paramecium, but all are ciliate protozoa. This means they use cilia to swim through water and their one complex cell, a eukaryote, conducts all of the organism's basic functions. It doesn't divide labor between different tissues or cells like an animal. Instead, each paramecium is capable of an aerobic exchange, similar to breathing, reproducing asexually, ingesting nutrients, and expelling waste.
With good vision, you can just make out the speck of a paramecium, since they are about .02 inches (.5 mm) long. They're better viewed under a microscope.
When a paramecium encounters food, it swivels to move the food into its gullet. The gullet is a small opening, like a mouth. It's lined with other cilia to help "swallow" the bits of organic or decaying matter it eats, like other unicellular organisms or bacteria. The food will continue down the gullet to get stored in food vacuoles until the cell needs energy.
Occasionally, a paramecium will meet another and exchange genetic material during a kind of primitive sexual reproduction. The membranous skins combine to make one giant paramecium. Then the tiny micronuclei that hold all of the genetic material switch around. When it divides into four smaller paramecium, they now have new combinations of DNA.
2007-10-10 08:06:31
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answer #2
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answered by Eli 4
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Animal like Read sources below, on the first link, read on the right hand side.
2016-04-07 23:51:20
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answer #3
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answered by Anonymous
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