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Fourth Grade Science Volume 2, Textbook Edition	pptx	6 MB

"Various Flowers" New Life PPT

Author: ︶￣Ｓs°╮

Upload Time: 2024-11-22

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"Various Flowers" New Life PPT

Part One: Special Observation of Flowers

In spring, all kinds of flowers are blooming.

Pear blossom, begonia flower, winter jasmine, magnolia flower

Tulips Rapeseed Cherry Blossoms Rhododendron

Observe the structures of various flowers like rapeseed flowers, and compare their similarities and differences.

Various flowers PPT, part 2: "Flower Observation" report meeting

What similarities and differences do we discover about these flowers?

What parts of the flower's structure are related to fruits and seeds?

The color and number of petals of various flowers may be different, but they generally have stamens and pistils. Whether a flower can bear fruit is related to the stamens and pistils in the flower.

Various flowers PPT, the third part: complete flowers and incomplete flowers

Some flowers, like rape flowers, are composed of four parts: sepals, petals, stamens and pistils. Such flowers are called complete flowers;

Some flowers are missing one or more parts. Such flowers are called incomplete flowers.

Among the flowers we observe, which flowers are complete flowers? Which flowers are imperfect flowers? Which part or parts are missing from the incomplete flower?

Flowers with only stamens and no pistils are called male flowers. Flowers with only pistils and no stamens are called female flowers. Both male and female flowers are unisexual.

Flowers that have both stamens and pistils are called bisexual flowers.

Check the information, can male flowers bear fruit? Can only female flowers bear fruit? How do stamens and pistils form fruits and seeds?

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For more information about the "New Life Various Flowers" PPT courseware, please click the New Life ppt Various Flowers ppt tag.

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Update Time: 2024-11-22

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"Various Flowers" New Life PPT