| Category | Format | Size |
|---|---|---|
| Fourth Grade Science Volume 2, Textbook Edition | pptx | 6 MB |
"The Germination of Seeds" New Life PPT
Description
"The 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, put them in beakers containing 200 ml of water, and soak them for 1 to 2 days.
Observe the changes that occur in various seeds and measure how much water the seeds absorb?
Seed Germination PPT, Part 2: Internal Structure of Seeds
Peel off the seed coats and see what their seed coats look like.
Carefully separate the "beans" in the seeds, and use a magnifying glass to observe what is and what it looks like at the junction of the two cotyledons.
Seeds like broad beans are composed of seed coat and embryo. The embryo includes the radicle, germ and cotyledons. The most important part of the seed is the embryo. The embryo is alive and can develop into a plant.
Seed Germination PPT, Part 3: Germinated Broad Beans
Place the soaked broad bean seeds on a plate covered with cotton, keep the cotton moist, continue to observe the changes in the seeds, and record our findings.
Based on our observations, talk about the functions of each part of the seed.
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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.
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Update Time: 2024-07-02
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