"The Germination of Seeds" New Life PPT Courseware

Description

"The Germination of Seeds" New Life PPT Courseware

Environmental conditions for seed germination

1. Ask questions

Under what environmental conditions can seeds germinate?

2. Make assumptions

Please make a hypothesis based on the text information: The germination of seeds requires a suitable temperature, a certain amount of moisture, and sufficient air.

(The design of the experimental group and the control group in the experimental design: the control group is compared with the experimental group, and there is only one variable)

The following are the results of the experiment exploring "Environmental Conditions for Seed Germination". Please answer the questions based on the table analysis.

(1) There are _____ groups of controls in the table, which are _______________________.

(2) The function of bottle No. 2 is _________, and the reason is __________________.

(3) If there are only bottles No. 2 and No. 3, which variable is used to test the effect of seed germination?

(4) If it is known in advance that the conditions in bottle No. 2 are the most suitable for seed germination, is it still necessary to set up bottle No. 2 in this experiment?

Is necessary. If bottle No. 2 is compared with bottle No. 1, bottle No. 3, and bottle No. 4, only one condition is different for each. Bottle No. 2 can be used as a control for bottle No. 1, bottle No. 3, and bottle No. 4 respectively to eliminate the influence of other conditions on the experimental results except the conditions under study.

Answer the questions based on the picture on the right:

(1) If this device is placed in a warm place, the seeds that can germinate are _________. The reason is that seed germination requires ____________, _____________, and __________.

(2) What cannot germinate if the device is placed in the refrigerator is __________

Divide the seeds with complete and full particles into two groups, A and B, and sow them separately at about 25°C. Group A is planted in fertile and moist soil, and group B is planted in poor and moist soil. The germination status of these two groups of seeds is: ( )

A B sprouts first and B A sprouts first

C sprouted at the same time D did not sprout at all

There is a riddle describing the peanut fruit: "The hemp house, the red curtain, and the fat white man lives inside." The hemp house refers to the peanut fruit ( ), the red tent refers to ( ), and the white fat man refers to ( )

A. Peel B. Seed C. Seed coat

D.Embryo E.Endosperm F.Cotyledon

Keywords: New life teaching courseware, Seed germination teaching courseware, Educational Science Edition fourth grade science PPT courseware download, Volume 2, Fourth grade science slide courseware download, New life PPT courseware download, Seed germination PPT courseware download, .PPT Format;

For more information about the PPT courseware "The Germination of the Seed of New Life", please click the "Germination of the Seed of New Life ppt" ppt tag.

"The Germination of Seeds" New Life PPT Download:

"The Germination of Seeds" New Life PPT Download Part One: Introduction of New Knowledge Guess what plants originally developed from? The seeds that are spread out will germinate and grow into a new plant when the conditions are suitable. What's inside the seed? Why can...

"The Germination of Seeds" New Life PPT:

"Germination of Seeds" New Life PPT Part One: Soaking Seeds Collect some broad bean, rape, and soybean seeds. Observe the similarities and differences in their appearance. Take 10 seeds each of broad beans, rapeseed, and soybeans, and place them in a pot filled with 200 ml of water.

"Germination of Plant Seeds" PPT courseware:

"Germination of Plant Seeds" PPT Courseware Part One Content: Classroom Observation Observe the internal structure of kidney bean seeds: Use a blade to make a small opening in the curved part of the seed, peel off the seed coat, and then gently break it open to observe the internal structure with a magnifying glass. Observe and think. : 1. Bean seeds..

File Info

Update Time: 2024-11-06

This template belongs to science courseware Fourth Grade Science Volume 2, Textbook Edition industry PPT template

Preview