CATDOLL : CATDOLL: Record form for 15-day observation of silkworm rearing (image of record form for 15-day observation of silkworm rearing)

1. Silkworm raising diary form for third grade?

Write the year, month, day, day of the week and weather conditions on the first line. You can also add a title for the diary on the second line. The content of the first line is written on the left >>>>>>>>>> (Title) () Year () Month () Day Week () (Weather) Body… Ending… >>>>>>>>>>>>>>>>>>>>>>>>>>

2. What are the contents of the silkworm rearing notes?

1. Observation record of eggs

Color:

shape:

size:

2. Hatching of eggs

temperature:

Time (how many days):

3 Observation records of larvae

First instar silkworm

Size:

Color:

Appearance:

Second to fifth instar silkworms

Length:

Food intake:

Color:

Pattern:

Number of valve pairs:

foot:

Action:

Food:

Number of peeling times:

4. Cocooning Observation Record

Silking days

Cocoon color:

Cocoon shape:

Cocoon size:

Quantity:

Days spent growing in the cocoon:

5. Cut open a cocoon and observe the pupa inside

Pupa color:

Shape:

Appearance:

Action:

6 Records of the Cocoon-Moth Transformation

Silkworm moth appearance:

Mating duration:

Number of eggs laid:

Survival days:

Eating conditions:

7 Observation Notes Summary:

3. What methods can be used to record silkworm breeding?

Silkworm breeding records can be recorded in the form of a diary to record the daily growth and changes of silkworms. Silkworms slowly hatch from small black seeds and grow up little by little. Recording this process can exercise children's observation ability and cultivate children's patience. In the growth of silkworms, children sometimes need to learn some knowledge by looking for information. Parents should support and help their children.

4. What is the answer to the record of silkworm’s growth changes?

Silkworm ages are divided into: first instar 4 to 5 days; second instar 3 to 4 days; third instar 4 days; fourth instar 6 days; fifth instar 7 to 9 days; pupa stage +4 to +8 days; moth stage 3 to 5 days.

1. Silkworm eggs. Silkworms reproduce by eggs. Silkworm eggs look like fine sesame seeds, about 1 mm wide and 0.5 mm thick. A female moth can produce 400 to 500 silkworm eggs. 1700 to 2000 silkworm eggs weigh about 1 gram. The color of silkworm eggs is light yellow or yellow when they are just laid, and changes to light red bean color or red bean color after 1 to 2 days, and then changes to gray-green or purple after 3 to 4 days. It will no longer change, which is called fixed color. The outer layer of silkworm eggs is a hard eggshell, and the inside is yolk and serosal membrane. The embryo in the fertilized egg continuously absorbs nutrients during the development process and gradually develops into an ant silkworm. It crawls out of the eggshell, and the eggshell becomes white or light yellow after it is empty.

5. How to fill in the silkworm growth record sheet?

The growth record of silkworms should first record the time, secondly the temperature, and thirdly the length.

6. Observation records of silkworms?

Silkworm breeding diary

April 9, 2018

On the way home from school this afternoon, my mother saw an old man selling silkworms at the gate of our school, so she spent one yuan to buy ten little silkworms. After I finished my homework, I began to observe them. 1. The color of these silkworms is gray, some are yellow, and they are only half the size of a sewing needle. At 8:30 in the evening, I saw that the silkworms had made several holes in the mulberry leaves.

2. Later I discovered that silkworms would twist their bodies and escape when they encountered danger.

3. I found that the feces of silkworms are like black sesame seeds, and the mouths of the young silkworms are black.

April 9, 2018

Today I found that the silkworms have white heads and yellow bodies. Suddenly I found that silkworms can play hide-and-seek with leaves. I also found that in addition to white silkworms, there are also brown silkworms. Some silkworms look like earthworms.

I counted the silkworms today and found two very small ones. Some of the larger ones have small white spots on their mouths.

April 9, 2018

After not seeing them for three days, I discovered that the silkworms had grown at an alarming rate. They were now terrifyingly large compared to a few days ago.

April 9, 2018

Today I found a silkworm starting to spin silk.

April 9, 2018

Brief comment: Careful observation will allow you to gain some knowledge that may not be found in books