"Soil and Plants" PPT

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Qingdao edition third grade science volume 2, soil and plants PPT

Part One: Root System of Plants

Question: What part of the plant is connected to the soil?

Plants are connected to the soil through their roots

The role of plant roots

Absorb moisture and inorganic salts

Keep plants firmly in the soil

The roots of plants grow in the soil, spread around, and firmly grasp the soil to absorb water and inorganic salts.

1. What are the same conditions?

(1) Put them all in the sun; (2) Pour the same amount of water (3) The plants are the same

2. What are the different conditions?

(Soil is different)

Soil and plants PPT, part 2: discussion of issues

The relationship between plants and soil

(1) Soil provides water and inorganic salts for plant growth

(2) Plants can help the soil accumulate organic matter

The importance of soil to plants

Part of the water in nature is stored in the soil, and the water in the soil is the main source of water required for the life activities of terrestrial plants.

There are inorganic salts in the soil that contain nitrogen, phosphorus, potassium, calcium, iron, zinc, copper and other elements required for plant growth. They play a very important role in the life activities of plants.

Every part of the plant has to breathe, and there must be a certain amount of air in the soil to allow the roots to breathe. It is easy to harden and harden suddenly after a rain. People loosen the soil in time, which can increase the gaps between soil particles, improve the air permeability of the soil, and allow plants to get more fresh air.

Keywords: Qingdao edition third grade science PPT courseware for the second volume free download, soil and plant PPT download, .PPT format;

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"Soil and Plants" PPT courseware:

Qingdao edition third grade science volume 2, soil and plants PPT courseware, part one: The role of soil Our conjecture What role does soil play in the growth of plants? 1. Fix the plant 2. Provide water and inorganic salts to the plant through the roots. 3. Provide air for roots..

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Update Time: 2024-09-30

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

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