The scientific value of paramecium, the structure and function of paramecium

Paramecium is a single-celled animal, and its structure and function are shown below

As can be seen from the above figure, the structure of the function of paramecium to digest food and absorb nutrients is the structure of food vacuoles, which rely on cilia movement, respiration by the epimembrane, excretion of food residues by anus, and excretion of water and waste by telescopic vesicles Therefore, the answer is:

Classification of paramecium.

Paramecium belongs to the class Cilia, Hymenostopae, and Paramecium. There are 22 species of paramecium that have been reported in the world. There are at least the following common species in China.

1 large paramecium.

Also known as tail paramecium, it is 180-280 microns long, with a conical posterior end and an angle of about 45 to 60 degrees at the top of the cone. Both telescopic bubbles have collection tubes. There is a small nucleus, dense type, oval. Lives in stagnant water or slow streams with a lot of organic matter.

2 Paramecium.

It is 80 170 μm long, resembling a paramecium, but the posterior part is wider than the anterior, the posterior end is tapered, and the apex angle is nearly 90 degrees. There are two telescopic bubbles, and the collection tube is shorter. There are two small nuclei, small, vesicular type. The living environment is the same as that of the tail paramecium.

3 Parmecium.

It is 180-310 microns long, resembles a tail paramecium, and sometimes has three telescopic vesicles. Small core vesicle type, there are 3-12. The living environment is the same as that of the tail paramecium.

4 Paramecium.

The body length is 80-150 microns. There is a symbiosis of green algae in the cytoplasm, and the whole body is green after being cultivated in the light spot. One small nucleus, dense type. Live in clear water ponds.

Question 1: What does paramecium mean to describe people who think only through simple sensations and not through the brain, the same as "unicellular animals".

Question 2: What kind of organism is a paramecium coelenterate.

Question 3: What does the modern term "paramecium" mean to describe people who think only through simple sensations and not through the brain, the same as "unicellular animals".

Question 4: What is paramecium What is paramecium Paramecium belongs to the class Cilia, Hymenostopae, and Paramecium, which is a small, cylindrical protozoan with a single body, which is composed of only one cell and is a single-celled animal. Oval.

Lives in stagnant water or slow streams with a lot of organic matter. The most common is Cercocerium paramecium. The body length is only 80,300 microns.

It is called paramecium because its body shape looks like an upside-down straw sole from a flat perspective. The whole body of paramecium is composed of a cell, and the surface of the body is covered with a membrane, and many cilia are densely grown on the membrane, which rotate in the water by the stroke of the cilia. It belongs to the most primitive and lowest protozoa in the animal kingdom.

It prefers to live in rice fields, ditches, or ponds with little flowing water in organic matter, and feeds on bacteria and unicellular algae. A paramecium can swallow about 43,000 bacteria a day, and it has a certain purification effect on sewage.

Paramecium is also the bait for small fish and the open bait for some oviparous roe fish.

Question 5: What does paramecium mean to describe people who think only through simple sensations and not through the brain, the same as "unicellular animals".

Question 6: What kind of organism is a paramecium coelenterate.

Question 7: What does the modern term "paramecium" mean to describe people who think only through simple sensations and not through the brain, the same as "unicellular animals".

Question 8: What is paramecium What is paramecium Paramecium belongs to the class Cilia, Hymenostopae, and is a small, cylindrical protozoan with a small body, which is composed of only one cell and is a unicellular animal. Oval.

Lives in stagnant water or slow streams with a lot of organic matter. The most common is Cercocerium paramecium. The body length is only 80,300 microns.

It is called paramecium because its body shape looks like an upside-down straw sole from a flat perspective. The whole body of paramecium is composed of a cell, and the surface of the body is covered with a membrane, and many cilia are densely grown on the membrane, which rotate in the water by the stroke of the cilia. It belongs to the most primitive and lowest protozoa in the animal kingdom.

It prefers to live in rice fields, ditches, or ponds with little flowing water in organic matter, and feeds on bacteria and unicellular algae. A paramecium can swallow about 43,000 bacteria a day, and it has a certain purification effect on sewage.

Paramecium is also the bait for small fish and the open bait for some oviparous roe fish.

<>1. Mouth groove: feeding, forming food bubbles;

2. Surface membrane: oxygen intake and carbon dioxide discharge all pass through the surface membrane;

3. Large nucleus: nutrient metabolism;

4. Small nucleus: reproduction;

5. Food vacuole: Food vacuole is produced by paramecium endocytosis, which will fuse with primary lysosomes to form secondary lysosomes after entering the cell;

6. Telescopic bubble and collection tube: collect metabolic waste and excess water, and discharge it from the body;

7. Anus: discharge indigestible food residues;

8. Cilia: auxiliary movement, paramecium rotates and advances in the water by the swing of cilia.