"Roots of Plants" PPT

Description

Qingdao version of fourth grade science volume 1, roots of plants PPT

Part One: Content Import

Edible seeds include: watermelon seeds, pecans, chestnuts, peanuts...

Edible fruits include: cucumber, eggplant

Edible leaves include: green vegetables, Chinese cabbage, onions, lilies, and celery

Edible roots include: radish, carrot, beet, sweet potato

Edible stems include: potatoes, ginger, cactus, water chestnuts, taro, wild rice, lotus root

Edible flowers include: day lily, chrysanthemum, rose, jasmine, osmanthus, dandelion, snow lotus, etc…

Plant Roots PPT, Part 2: Classroom Activities

Activity 1: Understand the roots of plants

1. Understand plants and find out where their roots grow

2. Find their similarities and differences (thickness, length)

3. Classify according to different characteristics of roots

1. Observe the characteristics of roots

What characteristics do these roots have in common?

Roots have root tips and root hairs. They all grow downward and underground. They have main roots, lateral roots, branch roots, rootlets, root hairs, etc.

Tap root system: the main root is obvious, and lateral roots grow from the main root

Fibrous root system: There is no obvious difference between main roots and lateral roots, and they are fibrous-shaped (like an old man's beard).

2. Understand the roots of plants

1. Tap root system:

2. Fibrary root system:

Activity 2: Study the role of roots

The strong wind blows, but the big tree is not blown down and can still stand firmly. Why is this?

The children tried hard to pull out the grass, but the grass was still not pulled out. Why?

Plant roots have the function of anchoring the plant

Roots are a very important part of the plant. Only when a plant's root system is developed can its above-ground organs grow vigorously. This is the principle of "deep roots and lush leaves"

Plant Roots PPT, Part 3: Thinking

Why do people water and fertilize the soil where crops are grown? Do you know where the water plants need to grow comes from?

Roots mainly rely on root hairs to extend into the soil to absorb water. While the roots absorb water, they also absorb nutrients dissolved in the water.

The role of plant roots

1. Fixed plants

2.Absorb moisture

3. Absorb nutrients

4. Store nutrients

5. The roots of a few plants also have the function of reproduction.

Keywords: Free download of Qingdao version of fourth grade science PPT courseware, Volume 1, Roots of Plants PPT download, .PPT format;

For more information about the "Roots of Plants" PPT courseware, please click on the "Roots of Plants" PPT tab.

"Plant Roots and Material Absorption" PPT courseware:

"Plant Roots and Material Absorption" PPT courseware Part 1: Discussion 1. What are the fundamental reasons for the continuous growth and elongation of roots? The division of cells in the root apical meristematic zone and the differentiation and elongation of cells in the elongation zone. 2. In agricultural production, transplanting crop seedlings...

"Plant Roots and Material Absorption" PPT:

"Plant Roots and Material Absorption" PPT Part One Content: Root System Introduction (1) Root System of Plants: All the roots of a plant together are called root systems. A root system with clearly developed main roots and lateral roots is called a tap root system. There are no obvious main and lateral roots...

"Roots of Plants" PPT download:

Qingdao Edition Fourth Grade Science Volume 1, Plant Roots PPT Download Part One: Observing the Characteristics of Roots 1. Observing the Characteristics of Roots What are the common characteristics of the above roots? Roots have root tips and root hairs, all grow downward, all grow underground, and have main roots, lateral roots, branches...

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Update Time: 2024-09-30

This template belongs to science courseware Qingdao Edition Fourth Grade Science Volume 1 industry PPT template

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