"The Stems Grow Taller" Growth Changes of Plants PPT

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"The Stems Grow Taller" Growth Changes of Plants PPT

Part One: Importing New Knowledge

Can carry out photosynthesis to produce nutrients needed for plant growth and development.

What is the function of plant stems?

Fix, absorb moisture and minerals

Observation: What happens to the plant’s stem?

Getting thicker and taller

The longer the stem, the taller it becomes PPT, part 2: new knowledge explanation

We found that the stem growth rate of impatiens is very slow in the first three weeks, the stem growth rate is very fast in the fourth to seventh weeks, and the stem growth rate gradually begins to slow down after the seventh week.

The growth process of the stem can be divided into several stages:

Seedling stage: stems—crystal clear, transporting water

Growth stage: branches and leaves bloom, stems grow fastest

Maturity: Stems - strong and supporting the entire plant

What role do plant stems play in plant growth and development?

There are many tubes in the stem that transport water absorbed by the roots from bottom to top and nutrients produced by the leaves from top to bottom.

The longer the stem, the taller it becomes PPT, part 3: Consolidation and improvement

1. Judgment questions

1. The stems of plants have the function of fixing and absorbing water. ( )

2. The stems of plants can transport water and minerals absorbed by the roots to various parts of the plant from bottom to top. ( )

3. The stems of plants can transport nutrients produced by green leaves to various parts of the plant body from bottom to top. ( )

4. The stems of impatiens have the characteristics of being "thick and supporting the entire plant" during the growth period. ( )

2. Fill in the blanks

1. The stems of plants have the functions of ( ) and ( ) and ( ).

2. The stems of plants can transport water and minerals absorbed by the roots from ( ) to various parts of the plant; they can transport nutrients produced by green leaves from ( ) to various parts of the plant.

The longer the stem grows, the taller it becomes. PPT, Part 4: Class Summary

The stems of plants support the plant and transport water and nutrients. The impatiens are about to bloom! Observe its next changes carefully and continue to measure and record the changes in the height of the plant. In the next lesson, we will study the flowers and fruits of impatiens.

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For more information about the PPT courseware "Growth changes of plants, the stems grow taller and taller", please click the Growth changes of plants ppt, the stems grow taller and taller ppt tag.

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Update Time: 2024-10-19

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

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