CATDOLL : CATDOLL: How to draw more than 8 pictures of the growth and changes of silkworms (How to draw more than 8 pictures of the growth and changes of silkworms)

1. What is the later growth process of silkworms?

Generally, the silkworms start to spin cocoons around 25 days old. When the silkworms' backs are shiny, yellow and transparent, it means that they are about to spin silk and spin cocoons. At this time, a cross space should be provided for the silkworms to spin cocoons. It takes two days to form a complete cocoon, and the silkworms complete the last molting in the cocoon and become pupae. After about ten days, they will emerge as silkworm moths and break out of the cocoon. After emerging from the cocoon, the female moth's tail emits a smell to lure the male to mate. After mating, the male dies. The female moth can lay about 500 eggs in about one night, and then slowly dies.

2. What is the growth process of spring silkworms?

1. Incubation.

The silkworms that have just hatched from the eggs are called ant silkworms. Their bodies are covered with fine hairs, which are no longer noticeable after about two days.

2. Grow up.

Silkworms live on mulberry leaves. After eating mulberry leaves continuously, their bodies turn white. After a period of time, they begin to shed their skin. When silkworms hibernate, they do not eat or move. On the surface, they are sleeping, but in fact they are shedding their old skin and putting on new skin to continue growing.

Silkworms molt four times during the entire breeding process. Each time they molt, they stop eating and moving. Try not to disturb them at this time, and don't throw them away thinking they are sick.

Each hibernation period of silkworms lasts about one day.

3. What are the six stages of silkworm growth?

Silkworms reproduce by laying eggs, which look like fine sesame seeds, about 1 mm wide and 0.5 mm thick. The growth process of silkworms generally goes through four different stages: egg, larva, pupa and adult.

1. The silkworms have hatched

The silkworm ants that have just hatched from the eggs are black in color and are called "ant silkworms". Their bodies are covered with fine hairs, which will no longer be noticeable after about two days.

2. The silkworms have grown up

Silkworms feed on mulberry leaves, and their bodies turn white after eating them continuously. After a while, they begin to shed their skins. The molting period lasts for about a day, and they do not eat or move, like sleeping. This is called "hibernation."

3. The silkworms are spinning silk

After molting once, it becomes a second-instar larva. Each time it molts, it ages one year. It has to molt four times in total, becoming a fifth-instar larva before it begins to spin silk and make cocoons.

4. The silkworms are producing cocoons

It takes a five-year-old larva two days and two nights to form a cocoon, and in the cocoon it sheds its skin for the final time to become a pupa.

5. Silkworms emerge from their cocoons

After about ten days, the female moth emerges from its cocoon and becomes a silkworm moth. After emerging from the cocoon, the female moth emits a scent from its tail to attract the male to mate, after which the male dies. The female moth lays about 500 eggs in one night and then slowly dies.

4. What is the growth process of silkworms?

The growth process of silkworms is divided into four stages: egg, larvae, pupa and adult. 1. The silkworms hatch. The silkworms that have just hatched from the eggs are black and are called "ant silkworms". They are covered with fine hairs, which will no longer be obvious after about two days.

2. The silkworm grows up. The silkworm feeds on mulberry leaves. After eating mulberry leaves continuously, its body turns white. After a period of time, it begins to shed its skin. The molting period lasts for about a day. It does not eat or move like sleeping. This is called "hibernation".

3. After the silkworm has shed its skin once, it is the second-instar larva. It will age one year after each molting, and it will molt four times in total before it becomes the fifth-instar larva and starts to spin silk and make cocoons.

4. It takes a five-year-old silkworm larva two days and two nights to make a cocoon, and it sheds its skin for the last time in the cocoon to become a pupa.

5. About ten days after the silkworm breaks out of the cocoon, it emerges as a silk moth and breaks out of the cocoon.

After emerging from the cocoon, the female moth emits a smell from its tail to attract the male for mating. The male dies after mating. The female moth can lay about 500 eggs in about one night, and then slowly dies.

5. What is the growth process of silkworms?

The growth process of silkworms:

Silkworm eggs → hatch into silkworm larvae → eat mulberry leaves and grow into adults → spin silk and make cocoons → turn into silkworm pupae in the cocoons → turn into silk moths after half a month → male and female silk moths mate and lay eggs and die within a few days (even if they do not mate or lay eggs, they will die within a few days).

6. What changes do silkworm larvae undergo during their growth?

1. Silkworm larvae need to shed their skin during their growth. After eating a lot of mulberry leaves, the silkworms grow larger, and the epidermis restricts their size, so they must shed their old epidermis and form a new one in order to continue to grow normally.

2. The larval stage of silkworms is divided into five instars, namely 1st instar (4-5 days), 2nd instar (3-4 days), 3rd instar (4 days), 4th instar (6 days), and 5th instar (7-9 days). A total of 4 molts are required. The larvae molt in the order from the beginning to the end when they are dormant.

At the end of the 3rd and 5th instars, the silkworms show signs of maturity (the feces change from hard to soft, from dark green to leaf green; the desire to eat and the amount of food eaten decrease; the front digestive tract is empty, and the chest becomes transparent; then they stop eating completely, the body shortens, the abdomen gradually becomes transparent, the head and chest of the silkworm are raised, and silk threads come out of the mouth), and they begin to spin silk and make cocoons.