How to make paramecium mounting

1. Method 1: Paramecium lives in all non-flowing waters rich in organic matter.

For example, ponds and rice paddies with aquatic weeds (or lots of fallen leaves). When collecting, it is necessary to pay attention to the upper water source on the water surface, and after collection, you can observe the light source with the naked eye on the spot.

Method 2: If it is a school located in a big city, it may not be possible to find a suitable water area for collecting paramecium in the surrounding area, and there is another way to obtain paramecium more conveniently. When the environment is harsh, paramecium secretes a layer of mucus that wraps itself up to form cysts, leaving it dormant.

Due to this property, a large number of paramecium cysts adhere to the roots of straw. According to this characteristic, take a number of fresh straws of the year (the fresher the better, after a long time, the paramecium cysts at the roots of the straw may have died. Cut about 10 centimeters at the base of the straw and put it in a beaker.

Medium (the length of the straw should not exceed the height of the beaker) and pour in water. Cover the mouth of the beaker with a double layer of gauze, tie it tightly (the purpose is to prevent other microorganisms from entering the air), and place it in a bright and warm place after a week.

There will be paramecium.

2. Corn kernels (preferably corn residues.)

So, put a beaker, add an appropriate amount of water (the ratio of corn kernels to water is about 100:1), boil for 10 15min, let it cool, and make up for the loss of water. The corn culture liquid is prepared and poured into a clean container.

3. If necessary, a little cotton wool should be added to prevent paramecium from escaping the observation range.

That's it, give it a ......

Location: ponds, small ditches, stinky ditches in front of the house, etc.

Culture: Cut the straw into small pieces, boil it in clean water, remove the straw, and let it stand at room temperature for 3-4 days (let it grow with bacteria, which is the food of paramecium). Then, pour the collected water sample into straw water and culture it in a warm place for 6-7 days, and a large number of paramecium can be seen.

When observing, a coverslip should be used, firstly, to prevent the lens from getting wet, and secondly, the surface of the water droplet is curved, and the view is an artifact due to refraction. To observe, put some cotton in the droplets.

1. In the pond.

2. There should be a laboratory in the school, ask the teacher for a little.

3. Of course, it should be released, in order to prevent the lens from getting wet, and the surface of the water droplets is curved, refraction will cause you to see an artifact.