"Various Flowers" New Life PPT Courseware 3 Simple campus recruitment activity planning plan summary enterprise and institution recruitment publicity lecture PPT template is a general PPT template for business post competition provided by the manuscript PPT, simple campus recruitment activity planning plan summary enterprise and institution recruitment promotion Lecture PPT template, you can edit and modify the text and pictures in the source file by downloading the source file. If you want more exquisite business PPT templates, you can come to grid resource. Doug resource PPT, massive PPT template slide material download, we only make high-quality PPT templates!
| 文件名 如何下载使用 | 下载次数 | Download Points | 下载地址 |
|---|---|---|---|
| "Various Flowers" New Li... | 9825次 | 0.00 | Free Download |
Tips: If you open the template and feel that it is not suitable for all your needs, you can search for related content "Various Flowers" New Life PPT Courseware 3 is enough.
How to use the Windows system template
Directly decompress the file and use it with office or wps
How to use the Mac system template
Directly decompress the file and use it Office or wps can be used
Related reading
For more detailed PPT-related tutorials and font tutorials, you can view: Click to see
How to create a high-quality technological sense PPT? 4 ways to share the bottom of the box
Notice
Do not download in WeChat, Zhihu, QQ, built-in browsers, please use mobile browsers to download! If you are a mobile phone user, please download it on your computer!
1. The manuscript PPT is only for study and reference, please delete it 24 hours after downloading.
2. If the resource involves your legitimate rights and interests, delete it immediately.
3. Contact information: service@daogebangong.com
"Various Flowers" New Life PPT Courseware 3, due to usage restrictions, it is only for personal study and reference use. For commercial use, please go to the relevant official website for authorization.
(Personal non-commercial use refers to the use of this font to complete the display of personal works, including but not limited to the design of personal papers, resumes, etc.)
Related reading
For more detailed PPT-related tutorials and font tutorials, you can view:Please click to see
Authoritative PPT Summary
"Various Flowers" New Life PPT Courseware 3
What are the similarities and differences in the structure of flowers? Which parts of the flower are related to reproduction?
What are the similarities and differences between the flowers we just observed?
same place
All have petals, sepals, stamens and pistils
different places
Different colors, shapes and smells
Observation 1
Observe whether the begonia, mulberry, calla lily and poplar flowers have sepals and petals.
I discovered: Begonia flowers have sepals and petals; mulberry flowers have no sepals and no petals; calla lilies have only sepals but no petals; poplar flowers have no sepals and no petals.
Observation 2
Observe daffodils and loofah flowers to see if they have stamens and pistils in their flowers.
Through observation I found:
Daffodils have both stamens and pistils; some loofahs have only stamens and some only pistils.
Complete flowers and incomplete flowers
Like rapeseed flowers, it consists of four parts: sepals, petals, stamens, and pistils. Such a flower is called a complete flower; a flower missing any of these parts is called an incomplete flower.
Complete flowers: rapeseed flowers, peach blossoms, begonia flowers, daffodils, etc.
Incomplete flowers: mulberry, poplar, calla lily, loofah, etc.
Unisexual and bisexual flowers
Flowers with only stamens and no pistils are called male flowers, and flowers with only pistils and no stamens are called female flowers. Both male and female flowers are unisexual.
think about it
Can male flowers bear fruit? Can only female flowers bear fruit? How do stamens and pistils form fruits and seeds?
Pistils and stamens are involved in the formation of fruits and seeds.
practice
1. Fill in the blanks
1. Like rapeseed, a flower composed of four parts ( ), ( ), stamens and pistils is called ( ). A flower missing any of its parts is called ( ).
2. A flower with only stamens and no pistils is ( ); a flower with only pistils and no stamens is ( ). Both of these flowers are ()
2. Judgment questions
1. The stamens and pistils of flowers are related to the formation of fruits and seeds. ( )
2. Flowers can be divided into complete flowers and incomplete flowers according to their structure. ( )
3. Some flowers have both stamens and pistils. ( )
4. Some flowers have only stamens or only pistils. ( )
5. Complete flowers must be bisexual flowers. ( )
6. Incomplete flowers must be unisexual flowers. ( )
7. All plants can bloom. ( )
8. Among the various parts of the flower, stamens and pistils are related to the formation of fruits and seeds. ( )
3. Q&A
2. Which part or parts of the flower structure form fruits and seeds and are related to reproduction?
Answer: In the structure of flowers, stamens and pistils are related to the formation of fruits and seeds and the reproduction of plants.
3. Can male flowers bear fruit? Can only female flowers bear fruit?
Answer: Among all kinds of flowers, male flowers cannot bear fruit, and only female flowers cannot bear fruit.
Keywords: new life teaching courseware, various flower teaching courseware, download of science PPT courseware for the second volume of the fourth grade in the textbook edition, download of fourth grade science slide courseware, download of new life PPT courseware, various flowers PPT courseware download, .PPT format;
For more information about the "New Life Various Flowers" PPT courseware, please click the New Life ppt Various Flowers ppt tag.
"Various Flowers" New Life PPT:
"Various Flowers" New Life PPT Part One: Special Observation of Flowers In spring, all kinds of flowers bloom. Pear blossom, crabapple flower, winter jasmine, magnolia, tulip, rapeseed, cherry blossom, azalea. Observe the structure of various flowers like rapeseed flowers...
"Various Flowers" New Life PPT Courseware 2:
"Various Flowers" New Life PPT Courseware 2 Group Discussion: What are the similarities between these flowers? What's the difference? Method: Observe the differences in the structure of their flowers. Count: the number of sepals, petals, stamens, and pistils. Group discussion: How to give these...
"Various Flowers" New Life PPT Courseware:
"Various Flowers" New Life PPT Courseware Concept 1. It is composed of four parts: sepals, petals, stamens and pistils. Such flowers are called complete flowers. Peach blossoms, pea flowers, morning glory, rapeseed flowers. 2. A flower that lacks one or more of its parts is called...