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Fourth Grade Science Volume 2, Textbook Edition	pptx	6 MB

"Rapeseed Flowers Bloom" New Life PPT

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Upload Time: 2024-11-22

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"Rapeseed Flowers Bloom" New Life PPT

Part One: Observing a Rapeseed Plant

We have observed the roots, stems, leaves, flowers, fruits and seeds of impatiens.

Can you differentiate between roots, stems, leaves, flowers, fruits and seeds of rapeseed?

Rapeseed flowers are blooming PPT, part 2: observing a rape flower

Dissecting a rapeseed flower.

Notice:

Before dissecting, observe whether the rape flower is intact.

Anatomical order: from outside to inside.

Use the tips of tweezers to gently hold the base of each part of the rapeseed flower and carefully tear it off, taking care to keep each part intact.

Rapeseed flowers are composed of four parts: sepals, petals, stamens, and pistils. Rapeseed flowers have 4 sepals, 4 petals, 6 stamens and 1 pistil.

Sepals: no veins

Petals: Two pairs facing each other in the shape of a "ten"

Stamens: same shape, different lengths

Pistil: protruding at the top and enlarged at the bottom

Rapeseed flowers are blooming PPT, part 3: Observing the flowers on a rapeseed plant

Count how many flowers bloom on a rapeseed plant. Count how many flower buds there are on this rapeseed plant.

Observe the flower of this rape plant from top to bottom and speculate on a series of changes that will occur to the flower buds.

Take several buds, flowers and fruit pods and arrange them in the order of their changes.

Draw them separately in the order they change.

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

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Update Time: 2024-11-22

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"Rapeseed Flowers Bloom" New Life PPT