"Big Trees and Grasses" Plant PPT

Description

"Big Trees and Grasses" Plant PPT

Part One: Common Grasses

There are not only tall trees on campus, but also low grass. Do you know these grasses? Where do these grasses grow on campus?

Plantain is an annual or biennial herb that grows in mountains, roadsides and rivers. Rhizome short. The leaves are clustered and ovate. The flower stem is 20-45 cm long, with terminal spikes.

Yellow-flowered wood sorrel, commonly known as clover, is a creeping perennial herb that likes moist, fertile, sandy soil and has strong cold tolerance. The leaves are inverted heart-shaped. Clover originally has only three leaves. If a mutation occurs, it will grow an extra leaf.

Dandelions grow on roadsides, fields, and hillsides. They are perennial herbaceous plants. The leaves are clustered and arranged in a rosette shape. The flower stem is shorter or as long as the leaves, elongates when it bears fruit, and its upper part is densely covered with white spider-like hairs. Use wind to disperse seeds.

Different grasses come in various shapes and forms, each with its own differences, including annuals, biennials, perennials, etc. But there are many common characteristics between them:

They all have roots, stems, leaves, flowers, and fruits;

Their stems are "herbaceous stems", succulent and soft;

These herbaceous weeds live in farmland, roadsides, wastelands, etc. They can be found everywhere and are widely distributed on the earth.

Big trees and small grass PPT, part 2 content: Comparing big trees and small grass

Compare the similarities and differences between big trees and small grass.

Characteristics of big trees:

Growing in the soil, it needs sunlight and water. The plant is tall, with thick and hard stems. It has roots, stems and leaves. Some will bloom and have seeds. It is perennial and long-lived. It is a woody plant.

Characteristics of Xiaocao:

They grow in the soil and need sunlight and water. The plants are short, have thin and soft stems, have roots, stems and leaves, and some can bloom and have seeds. They have a short lifespan and are herbaceous plants.

Big tree and small grass PPT, the third part: sorting out similarities and differences

Record the similarities and differences between trees and grass in the circle diagram below.

big tree

Plants are tall

The stem is thick and hard

Perennial, long life

woody plants

grass

Plants are short

Stem thin, soft

short life

herb

grow in soil

Needs sunlight and moisture

There are roots, stems and leaves,

Some will bloom and have seeds

Keywords: Free download of Chinese PPT courseware for the third grade of the textbook version, PPT download of big trees and grass, download of plant PPT, .PPT format;

For more information about the "Plant Trees and Grasses" PPT courseware, please click on the "Plant ppt Trees and Grass ppt" tab.

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Update Time: 2024-09-03

This template belongs to science courseware Third Grade Science Volume 1, Textbook Edition industry PPT template

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