Paramecium are 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 also are one essentialpart of the food chain. They feeding on algae and also other microorganisms, andother little organisms eat them. All members the the Phylum Ciliophora relocate by tinyhair-like projections referred to as cilia. Color every cilia black.Theparamecium cannot adjust its shape favor the ameba because it has actually a thick outermembrane called the pellicle. The pellicle surrounding the cell membrane. Colorthe pellicle irradiate blue.

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Thereare two varieties of nuclei (plural of nucleus). The large nucleus is called the macronucleuswhich controls cell tasks such together respiration, protein synthesis and digestion. Color the macronucleusred. The lot smaller micronucleus is supplied only during reproduction, colorthe micronucleus pink. Reproduction in paramecium involves the exchangingof DNA within the micronucleus. In stimulate to do this, 2 paramecium lie next byside and join in ~ the mouth pore. This process is called conjugation and also is a methodof sexual reproduction in other microorganisms.

Contractilevacuoles are provided in animal cells to remove the overfill water. The contractilevacuole is shaped favor a star - color the contractile vacuole dark green.

Parameciumare heterotrophs, definition they need to consume food for their energy. Food entersthe paramecium v the mouth spicy (color orange) and also goes come the gullet(color dark blue). The area of the paramecium appears pinched inward and also is called the oral groove, cilia sweep food into this area. In ~ the finish of the gullet, food vacuoles room formed. Foodvacuoles then continue to be in the cytoplasm until the food is digested. Color allfood secret light brown. Undigested food particles are got rid of throughthe anal spicy (color dark brown).

Parameciumcan respond come temperature, food, oxygen and toxins and also have a very simple defensemechanism. Just inside the pellicle are threadlike organelles referred to as trichocysts.The paramecium can shoot small threads the end of the cabinet to entangle a predator orto make themselves appear bigger. Color the trichocysts purple. Parameciumare also known to exhibit avoidance behavior. This is where the paramecium willmove away from a negative or uncomfortable stimulus.

Thereare 2 type of cytoplasm in the paramecium. The cytoplasm approximately the edge isclear and is called ectoplasm. Leave the ectoplasm clear. The remainder of thecytoplasm is much more more dense and appears darker. This is dubbed the endoplasm. Mental that words "ecto" means outside, and the indigenous "endo" means inside. color the endoplasm yellow.


1. Is the paramecium a imreparable cells or multicell organism?

2. Come what Phylum and Kingdom execute paramecium belong?

3. Specify heterotroph.

4. What perform paramecium eat?

5. Just how do all members of the Phylum Ciliophora move?

6. Why can"t the paramecium adjust shape favor the ameba?

7. What carry out the macronucleus and also micronucleus do?

8. Define conjugation.

9. What is the function of the contractile vacuole?

10. What is the dental groove?

11. Wastes exit the paramecium through what structure?

12. What is the duty of the trichocysts?

13. To compare the endoplasm to the ectoplasm.

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14. Define 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 sharp 10. Trichocysts 11. Ectoplasm 12. Endoplasm