"Seeds Become Seedlings" Plant Growth Changes PPT Download

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"Seeds Become Seedlings" Plant Growth Changes PPT Download

Part One: Importing New Knowledge

As people grow up, they need to supplement various nutrients. How do we obtain nutrients?

1. Where do the nutrients needed for plant growth and development come from?

2. How are they absorbed?

Seeds turned into seedlings PPT, part 2: new knowledge explained

Growth changes of impatiens seedlings in the first 3 weeks

From seed to seedling, we have documented many facts about the growth changes of impatiens. Now let’s share our observation records!

The impatiens germinated and emerged 7 days after sowing.

cotyledons of impatiens seedlings

10 days after sowing, the impatiens grow cotyledons

This is the first pair of cotyledons of impatiens

The cotyledons are light green, oval, with smooth surface and no obvious veins.

our thoughts

Why are leaves and stems mostly green? Why do plants need sunlight?

Plants rely on sunlight to make nutrients. The reason why plants are green is because their leaves contain many tiny green particles - chlorophyll, which is an important type of green pigment in the chloroplasts of plant cells.

Seeds turn into seedlings PPT, part three: expand understanding

There was no air circulation, so how could the little mouse not be suffocated to death?

The chloroplasts in green plants can use light to convert carbon dioxide and water into nutrients and release oxygen. The little mouse inhales oxygen and exhales carbon dioxide for green plants to perform photosynthesis, so the little mouse did not suffocate to death.

In 1771, British scientist Priestley discovered that green plants could renew the air. Later, experiments proved that this was the result of oxygen released by plant photosynthesis. Chloroplasts in green plants can use light to convert carbon dioxide into nutrients and release oxygen.

Seeds turn into seedlings PPT, part 4: Consolidation and improvement

1. Judgment questions

1. A seed has its own special structure and can germinate and grow into a plant under suitable conditions. ( )

2. Seeds have a seed coat that protects the contents inside. ( )

3. Impatiens seeds need a lot of water when they germinate. ( )

4. When sowing impatiens, they should be sown deep in the soil in order to prevent them from being washed away by rain. ( )

Seeds turned into seedlings PPT, Part 5: Class summary

Photosynthesis in plants not only produces nutrients for plants, but also produces nutrients and oxygen for us humans and animals.

Sunlight

Carbon dioxide + water - → oxygen + nutrients

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For more information about the PPT courseware "Growth Changes of Plants, Seeds Become Seedlings", please click on the "Growth Changes of Plants, Seeds Become Seedlings" ppt tag.

"Our Great Harvest" PPT download of plant growth changes:

"Our Great Harvest" PPT download on the growth and changes of plants Part 1: Introduction of new knowledge What we sowed was one seed at the beginning, but how many seeds have it turned into now? What do you know by observing the fruits of impatiens? The fruits of impatiens are oval and green (..

"Our Great Harvest" Plant Growth Changes PPT:

"Our Great Harvest" PPT on the Growth and Changes of Plants Part One: We Harvest the Seeds After several months of growth, the impatiens have bloomed and bear fruit, and flower farmers will also welcome the joy of a bumper harvest. How many seeds can be harvested from one impatiens plant? Let's make a simple...

Download the PPT "Blooming and Fruiting" Plant Growth Changes:

"Blooming, Fruiting" PPT Download of Plant Growth Changes Part One: Introduction of New Knowledge Impatiens Is there any connection between flowering and fruiting? ... ... ... PPT has blossomed and bears fruit, the second part of the content: new lesson explanation, small activities before class: observing phoenix...

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Update Time: 2024-09-22

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

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