What is the mystery of the snail s self growing after cutting off its antennae?

Snails, our common mollusks.

Snails can often be seen in cold, damp environments. What's interesting about the snail is its two antennae, which retract when you touch the snail and come back out after a while. In fact, the snail has eyes on its antennae, which is the guarantee of its actions.

What happens if you cut off the tentacles of a snail?

Experiments have been conducted to cut off the left and right antennae of two snails, and one with both antennae. It was found that the snails cut off on both sides were slow and unfixed. The left or right antennae of the snail is cut off in the direction of the obvious deviation, it can be said that this is the most important part of the snail, if there is no antennae, the snail can not move at all.

And after more than ten days, the snail's antennae will grow again. But why do snails have antennae that grow back, but other animals can't if they lose their antennae or eyes? This is actually related to the redifferentiation of cells.

To put it simply, cell redifferentiation refers to the process of re-differentiation of calli into other tissues or organs in an organism under certain conditions. This process is manifested in all living beings. For example, if the epidermis of human ** falls off, a new epidermis will grow, which is the result of cell redifferentiation.

And some organisms can redifferentiate cells and grow eyes, but some organisms cannot? This is also related to the regulation of gene expression, only the genome of organisms.

The genes that contain this part allow calli to redifferentiate into other tissue cells so that they can complete this process. If there is no gene expression regulation, it may really be like in **, no matter what part of the body is lost, it can grow back.

This is the same as biological evolution.

It also has a certain relationship that the antennae are the most important part of the snail, and if there are no antennae can only wait for death, natural selection in the long term.

The snail's ability to grow antennae is preserved, like a gecko.

Cutting off one's tail in danger and being able to regrow one's tail are all means that creatures have evolved to protect themselves.

I think the mystery of this manifestation is that life will find a way out, because the tentacles of the snail are very important organs for him.

The snail's regenerative ability is very strong, and its metabolism is also very fast, which is unimaginable and unimaginable to humans.

This is because snails are mollusks, mollusks, and their own repair ability is relatively strong.

Slug, a mollusk of the family Slugs of the order Gastropodae. The slugs look like snails without shells, and their bodies are dark black, dark gray, yellowish-white, or grayish-red; antennae 2 pairs; toothed tongue in the mouth; The anterior end of the dorsal end of the body is covered with a mantle, the edge is rolled up, and there are obvious concentric circles on it, that is, the infiltration and quiet growth line; The respiratory pore clump is in front of the right side of the body, surrounded by fine color lines; Mucus is colorless.

This is a slug, also known as a slug, which is a type of snail. Their antennae grow on either side of the front of their heads, and they can sense changes in chemicals and humidity, helping them find food and avoid danger. Their body is soft, has no shell, is elongated, usually gray or yellow, and sometimes spotted.

They live in moist environments, such as grasses, forests, and around houses, and feed on plants.

The tentacles that touch the snail will have a reaction of retracting the antennae. When the snail moves, if its antennae touch an obstacle, the antennae will automatically retract and then reach out to other places to find a way out. Touching the snail's body, the snail will shrink into its shell, and this is only out of defensive instinct.

Shape overview: The whole body of the snail includes eyes, mouth, feet, shell, antennae and other parts, the body is a spiral shell, its shape, color and size are different, their shells are pagoda-shaped, gyro-shaped, conical, spherical, pipe-shaped and so on. At present, the white jade snail, the cover snail, the scattered snail, the bright snail, the brown cloud agate snail, etc., all have their own unique appearance.

The eyes of the snail grow on the back pair of antennae on the head.

The antennae are the most important sensory organs of the snail, and the tentacles are endless.

Snails can't tell the direction without antennae, so they will regrow their antennae.

This is because the snail's antennae have regenerated tissue.

This is because he needs to use his antennae to determine the direction.

This is the same as a gecko with a broken tail and regrowing it.

Because the antennae have regenerative tissue.

Because the tip of the snail's antennae still has eyes.

Maybe it's like a gecko's tail.

It's self-healing.

It's because it's so tenacious.

Inside, the green pants of the 8th Army suddenly cracked.

The surcharge has been expanded by several black vv republics will regret it.

Because the main composition of its antennae is muscles, it can contract and stretch freely.

There are eyes that cannot be seen.

The upper end of the snail's large antennae has two small black dots, which are its eyes. Although it has eyes, the snail can't see the flowers and grass outside at all, because its eyes are not very advanced, so it can't see the images of the outside world, and can only feel the light and dark changes of the outside world. The little snail didn't care at all, it thought it was good.

As it walked slowly, it touched east and west with its eyes, and as soon as it encountered an obstacle, it quickly retracted its antennae.

It should be said that the photoreceptor grows on the antennae...