Paramecium space unicellular protozoane classified in the phylum Ciliophora (pronounced sill-ee-uh-FORE-uh),and the Kingdom Protista. Lock live in quiet or stagnant ponds and also are one essentialpart of the food chain. They feeding on algae and also other microorganisms, andother tiny organisms eat them. All members the the Phylum Ciliophora relocate by tinyhair-like projections referred to as cilia. Color all cilia black.Theparamecium cannot adjust its shape prefer the ameba since it has a thick outermembrane dubbed the pellicle. The pellicle surrounds the cell membrane. Colorthe pellicle light blue.

You are watching: Why can t the paramecium change shape like the ameba

Thereare two types of nuclei (plural that nucleus). The big nucleus is called the macronucleuswhich controls cell tasks such together respiration, protein synthesis and digestion. Color the macronucleusred. The lot smaller micronucleus is used only during reproduction, colorthe micronucleus pink. Reproduction in paramecium entails the exchangingof DNA within the micronucleus. In stimulate to perform this, 2 paramecium lie side byside and also join in ~ the mouth pore. This procedure is referred to as conjugation and is a methodof sexual reproduction in various other microorganisms.

Contractilevacuoles are supplied in pet cells to eliminate the overfill water. The contractilevacuole is shaped choose a star - shade the contractile vacuole dark green.

Parameciumare heterotrophs, meaning they have to consume food for their energy. Food entersthe paramecium through the mouth spicy (color orange) and goes come the gullet(color dark blue). The area that the paramecium appears pinched inward and is referred to as the dental groove, cilia move food right into this area. In ~ the end of the gullet, food vacuoles room formed. Foodvacuoles then remain in the cytoplasm till the food is digested. Color allfood vacuoles light brown. Undigested food particles are eliminated throughthe anal sharp (color dark brown).

Parameciumcan respond come temperature, food, oxygen and also toxins and have a very basic defensemechanism. Just inside the pellicle space threadlike organelles dubbed trichocysts.The paramecium can shoot small threads out of the cell to entangle a predator orto make themselves appear bigger. Color the trichocysts purple. Parameciumare additionally known to exhibition avoidance behavior. This is where the paramecium willmove away from a an adverse or uncomfortable stimulus.

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


*
Questions:

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

2. To what Phylum and Kingdom execute paramecium belong?

3. Define heterotroph.

4. What do 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 do 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 v what structure?

12. What is the duty of the trichocysts?

13. Compare the endoplasm come the ectoplasm.

See more: How Many Calories In 3 Oz Of Pork Chop Calories, Carbs & Nutrition Facts

14. Specify avoidance behavior.

15. Where do paramecium live?


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