CATDOLL : CATDOLL: A hand-copied newspaper with pictures of the growth process of silkworms

1. What is the growth process of silkworms?

The growth process of silkworms

1. The silkworm babies have hatched. The silkworm babies that have just hatched from the eggs are black and are called "ant silkworms". Their bodies are covered with fine hairs, which will no longer be noticeable 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 spins silk and molts once, it is a second-instar larva. It gets one year older each time it molts, and it has to molt four times in total to become a fifth-instar larva before it starts spinning silk and making cocoons. 4. It takes two days and two nights for a five-year-old larva to make a cocoon, and it molts 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 lure the male to mate, and the male dies after mating. The female moth can lay about 500 eggs in about one night, and then it will slowly die.

2. How to draw the life cycle of a silkworm?

1. Draw the rough diagrams of the various stages of the life of a silkworm on paper, and use a black colored pen to draw the moth. Draw the rough diagrams of the various stages of the life of a silkworm on paper with a pencil, and use a black colored pen to draw the shape of the adult moth and the figure of the silkworm.

2. Use a black colored pen to draw the larvae of the silkworm. Next, use a black colored pen to draw the larvae of the silkworm, which are drawn from hatching to dormancy and molting.

3. Use a black colored pen to draw the graphics of the silkworm's secondary dormancy and growth stage after molting. Then, use a black colored pen to draw the graphics of the silkworm's secondary dormancy and growth stage after molting.

4. Use a black colored pen to draw a picture of a grown silkworm. Next, use a black colored pen to draw a picture of a grown silkworm.

5. Use a black colored pen to draw a picture of a silkworm spinning silk to form a cocoon. Then, use a black colored pen to draw a picture of a silkworm spinning silk to form a cocoon.

6. Use a black colored pen to draw the image of the silkworm becoming a pupa in the cocoon. Next, use a black colored pen to draw the image of the silkworm becoming a pupa in the cocoon.

7. Use orange and tangerine colored pencils to color the figures of the silkworms at different stages. Finally, use orange and tangerine colored pencils to color the figures of the silkworms at different stages so that they look nice.

Silkworms reproduce by laying eggs. Silkworm eggs look like fine sesame seeds, about 1 mm wide and 0.5 mm thick. A female moth can lay 400 to 500 silkworm eggs. 1700 to 2000 silkworm eggs weigh about 1 gram and have a diameter of 0.2 cm. The color of silkworm eggs is light yellow or yellow when they are first laid, and changes to light red bean color or red bean color after 1 to 2 days, and then turns to gray-green or purple after 3 to 4 days. It no longer changes and is called a fixed color.

The outer layer of the silkworm egg is a hard eggshell, and inside is yolk and serous membrane. The embryo in the fertilized egg continuously absorbs nutrients during the development process and gradually develops into a silkworm. It crawls out of the eggshell, and the eggshell becomes white or light yellow after it is empty.

3. How do silkworms grow?

The growth process of silkworms is divided into four stages: eggs, larvae, pupae and adults. The silkworms that have just hatched from the eggs are black. They look like ants and are called ant silkworms. Their bodies are covered with fine hairs, which will no longer be obvious after about two days.

Silkworms feed on mulberry leaves. After eating mulberry leaves continuously, their bodies will gradually turn white, and after a period of time, they will begin to shed their skin.

It takes about a day to molt, and the larvae do not eat or move, just like sleeping. This is called dormancy. After molting once, they are the second-instar larvae. Each time they molt, they grow one year older. They molt four times in total, and then they become the fifth-instar larvae to spin silk and make cocoons. The five-year-old larvae need two days and two nights to make a cocoon, and molt for the last time in the cocoon to become a pupa. After about ten days, they break out of the cocoon and become silkworm moths.