Paramecium space unicellular protozoans classified in the phylum Ciliophora (pronounced sill-ee-uh-FORE-uh),and the Kingdom Protista. Castle live in quiet or stagnant ponds and are one essentialpart that the food chain. They feeding on algae and also other microorganisms, andother small organisms eat them. Every members the the Phylum Ciliophora move by tinyhair-like projections referred to as cilia. Color all cilia black.Theparamecium cannot change its shape choose the ameba since it has actually a thick outermembrane called the pellicle. The pellicle surrounding the cell membrane. Colorthe pellicle light blue.

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Thereare two types of nuclei (plural of nucleus). The large nucleus is dubbed the macronucleuswhich controls cell tasks such as respiration, protein synthesis and digestion. Color the macronucleusred. The lot smaller micronucleus is used only throughout reproduction, colorthe micronucleus pink. Reproduction in paramecium requires the exchangingof DNA in ~ the micronucleus. In stimulate to perform this, two paramecium lie next byside and join at the mouth pore. This process is dubbed conjugation and also is a methodof sex-related reproduction in various other microorganisms.

Contractilevacuoles are offered in pet cells to eliminate the overabundance water. The contractilevacuole is shaped like a star - shade the contractile vacuole dark green.

Parameciumare heterotrophs, definition they must consume food for their energy. Food entersthe paramecium v the mouth sharp (color orange) and goes to the gullet(color dark blue). The area of the paramecium appears pinched inward and is called the oral groove, cilia sweep food right into this area. At the finish of the gullet, food vacuoles space formed. Foodvacuoles then remain in the cytoplasm until the food is digested. Color allfood vacuoles light brown. Undigested food particles are removed throughthe anal pore (color dark brown).

Parameciumcan respond to temperature, food, oxygen and also toxins and have a very basic defensemechanism. Just inside the pellicle room threadlike organelles dubbed trichocysts.The paramecium deserve to shoot tiny threads the end of the cell to entangle a predator orto make themselves appear bigger. Color the trichocysts purple. Parameciumare additionally known to exhibit avoidance behavior. This is wherein the paramecium willmove far from a an unfavorable or uncomfortable stimulus.

Thereare 2 kinds of cytoplasm in the paramecium. The cytoplasm about the edge isclear and is called ectoplasm. Leave the ectoplasm clear. The rest of thecytoplasm is more more dense and appears darker. This is called the endoplasm. Mental that words "ecto" method outside, and also the indigenous "endo" means inside. color the endoplasm yellow.


1. Is the paramecium a uncellular cells or multicellular organism?

2. Come what Phylum and also Kingdom carry out paramecium belong?

3. Define heterotroph.

4. What perform paramecium eat?

5. How do every members the the Phylum Ciliophora move?

6. Why can"t the paramecium change shape like the ameba?

7. What perform the macronucleus and micronucleus do?

8. Specify conjugation.

9. What is the role of the contractile vacuole?

10. What is the dental groove?

11. Wastes departure the paramecium through what structure?

12. What is the function of the trichocysts?

13. Compare the endoplasm come the ectoplasm.

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14. Specify avoidance behavior.

15. Where do paramecium live?

1. Cilia 2. Pellicle 3. Macronucleus 4. Micronucleus 5. Contractile Vacuole 6. Mouth spicy 7. Gullet 8. Food Vacuole 9. Anal pore 10. Trichocysts 11. Ectoplasm 12. Endoplasm