People's Education Edition Biology for Grade 8, Volume 1
People's Education Edition Biology for Grade 8, Volume 2
People's Education Edition seventh grade biology volume 1
People's Education Press High School Biology Compulsory Course 2
Beijing Normal University Edition Seventh Grade Biology Volume 2
People's Education Press seventh grade biology book volume 2
Beijing Normal University Edition Eighth Grade Biology Volume 1
Beijing Normal University Edition Seventh Grade Biology Volume 1
Beijing Normal University Edition Eighth Grade Biology Volume 2
Jiangsu Education Edition Seventh Grade Biology Volume 1
High School Biology Compulsory Course 1, published by People's Education Press
Jiangsu Education Edition 8th Grade Biology Volume 1
Jiangsu Education Edition Seventh Grade Biology Volume 2
Jiangsu Education Edition 8th Grade Biology Volume 2
Category | Format | Size |
---|---|---|
People's Education Edition seventh grade biology volume 1 | pptx | 6 MB |
Description
"Blooming and Fruiting" Life of Angiosperms PPT Courseware 3
1. There are many kinds of flowers in nature. Do they have something in common?
2. Why does it bear fruit after flowering?
think
Which part of the flower will develop into a fruit?
ovary
Which structures in flowers are most important for plants to reproduce?
Stamens and pistils
pollination and fertilization
1. The concept of pollination
The process of pollen falling from the anthers to the stigma of the pistil is called pollination.
2. Method of pollination
3. The process of fertilization
Think about it: in life, we often find that the ears of corn have missing kernels; when eating melon seeds, the kernels are often hollow. What causes this? What is the solution?
Mainly caused by insufficient pollination.
The solution is: artificial assisted pollination
practice
1. For plant reproduction, the main structure of flowers is ( )
A. Petals B. Stamens and pistils
C.ovule D.ovary
2. What changes occur in each part of the flower during the development process from flower to fruit? Express it by connecting lines.
3. During the flowering season of fruit trees, if you encounter continuous rainy weather, the yield of fruit trees will often be reduced. What is the reason?
This is because the pollination of fruit trees is affected. For example, fruit trees that rely on insect pollination have insufficient pollination due to restrictions on insect flight, resulting in reduced yields.
4. Some flowers do not bear fruit. For example, most of the flowers of cucumbers, pumpkins, and loofahs will not bear fruit. Please explain this phenomenon.
Because the flowers of these plants are divided into female flowers and male flowers, the male flowers will not bear fruit.
Keywords: The life teaching courseware of angiosperms, the teaching courseware of flowering and fruiting, the PPT courseware download for the first volume of seventh grade biology of the People's Education Edition, the downloading of the biology slide courseware for the seventh grade, the downloading PPT courseware of the life of angiosperms, the downloading of the flowering and fruiting PPT courseware, .PPT format;
For more information about the PPT courseware "Blooming and Fruiting in the Lifetime of Angiosperms", please click the "Blooming and Fruiting in the Lifetime of Angiosperms" ppt tag.
"Blooming and Fruiting of Plants" PPT courseware:
"Blooming and Fruiting of Plants" PPT courseware
Part One Content: The Composition of Flowers
corolla
The crown is made of petals.
Different types of flowers have different sizes, colors and numbers of petals.
calyx
The calyx is the part that supports the petals. When it is not blooming...
"Blooming and Fruiting of Plants" PPT:
"Blooming and Fruiting of Plants" PPT Part One Content: Classroom Thinking Thinking: What is the meaning of plant flowering? Which part of the flower will develop into fruit in the future? Which structures in flowers are most important for plants to reproduce? 1. Flower structure stamens ..
"Blooming and Fruiting" Life of Angiosperms PPT Courseware 7:
"Blooming and Fruiting" Lifetime of Angiosperms PPT Courseware 7 Learning Objectives 1. What is the main structure of flowers 2. Describe the process of pollination and fertilization 3. Clarify the relationship between flowers, fruits and seeds 1. The structure of flowers The main structure of flowers is stamens and pistil. From flower to fruit requires experience...
File Info
Update Time: 2024-09-23
This template belongs to biology courseware People's Education Edition seventh grade biology volume 1 industry PPT template
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