Why can earthworms still live when they are broken?

Earthworms belong to lower annelids, with a head, tail, mouth, stomach, intestines and anus. The body seems to be made up of two tubes with two pointed ends, but the outer layer is a body wall connected by a ring. There is an intestinal tract for digestion running through layers of diaphragms from beginning to end. Let's take a look at why earthworms can still live.

Why can earthworms still live when they are broken?

When the earthworm is cut into two sections, the muscle tissue on the section immediately contracts, and part of the muscle quickly dissolves itself to form a new cell mass, while white blood cells gather on the section to form an embolism, making the wound close quickly. The protocells located in the septum of the body cavity quickly migrate to the section to form nodular regenerated buds along with their own dissolved muscle cells. At the same time, the cells of the digestive tract, nervous system, blood vessels and other tissues in the body grow rapidly into the regenerated buds through a large number of mitosis. As the cells grow, a new head grows on the section that lacks the head, and a tail grows on the section that lacks the tail, so that one earthworm becomes two complete earthworms.

What kind of food do earthworms eat?

Earthworms are omnivorous animals, in addition to glass, plastic and rubber do not eat, the rest such as humus, animal feces, soil bacteria, fungi and the decomposition products of these substances are eaten. Sensitive taste, sweet and sour taste, bitter taste, like hot and soft feed, especially gluttonous to animal food, the monthly food intake is equivalent to their own weight, about half of the food through the digestive tract is excreted as feces.

What are earthworms afraid of?

1. Afraid of strong light: earthworms have negative phototaxis, especially to avoid strong sunlight and blue light, but are not afraid of red light and tend to be weak light.

2. Afraid of soaking: if most earthworms escape immediately after being submerged by water, the body can not escape and their vitality decreases.

3. Fear of vibration: earthworms like a quiet environment, requiring low noise and no vibration, showing unease and escape after being shaken.

4. Fear of sulking: earthworms need good ventilation in order to replenish oxygen and discharge carbon dioxide, and are particularly sensitive to ammonia and smoke.

5. Fear of pesticides: earthworms are afraid of pesticides, and there are few earthworms in farmland or orchards where pesticides, especially highly toxic pesticides, have been used.

6. Fear of acid and alkali: earthworms are very sensitive to acidic substances, so it is best to adjust the feed to weak acidity, which is conducive to the digestion of proteins and other substances.