"Blooming and Fruiting" PPT courseware on the life of angiosperms

Description

"Blooming and Fruiting" PPT courseware on the life of angiosperms

Pre-class testing

1. The part where roots grow fastest is __________.

2. The reason why roots can grow is because: ______ cell division increases the number of cells, and ______ cell growth increases the cell volume.

3. Thousands of branches and their green leaves are developed from ______

4. The role of fertilizers is mainly to provide ______ for the growth of plants. Plants require the most amount of ______, ______, and ______ in their lifetime. There are two major types of nutrients that plants also need: ____________ and ______. The former Including ______, which includes ______ and ______.

learning target

1. Be able to give examples of the structure of flowers;

2. Be able to describe the process of pollination and fertilization;

3. Develop the habit of caring for flowers;

4. Answer questions through careful observation and contact with real life situations.

Directed self-study:

1. Combining the courseware and comparing with the peach blossom model, I can recognize the structural names of each part of the peach blossom and remember the functions of each part:

2. Discussion questions

(1) Which part of the flower will develop into fruits in the future?

(2) Which structures of flowers are most important for plant reproduction?

3. What is pollination? What are the common methods?

4. What is fertilization? What is its general process?

1. The structure of flowers

1. What do stamens and pistils consist of?

2. What parts are flowers made of?

3. What is pollination? What are the common methods?

4. What is fertilization? What is its general process?

The process of pollen falling from the anthers to the stigma of the pistil is called pollination.

Consolidate and improve:

1. The main part of the flower is ( )

A. Flower stalk and receptacle B. Calyx and corolla

C. Stamens and pistils D. Ovary and ovules

2. 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?

Answer: This is because the pollination of fruit trees is affected.

3. If the pistils are removed from Peach Blossom A before flowering, the stamens are removed from Peach Blossom B, and the pistils from Peach Blossom C are not processed. Cover the three flowers A, B and C with transparent plastic bags and tie the mouth of the bag tightly. The result is ( ).

A. A does not bear fruit, B does not bear fruit, and C bears fruit.

B. A does not bear fruit, B bears fruit, and C does not bear fruit.

C. A does not bear fruit, B bears fruit, and C bears fruit.

D. A does not bear fruit, B does not bear fruit, and C does not bear fruit.

Pre-class testing:

1. The most important part of a flower is ( )

A. Calyx B. Corolla C. Pistil D. Stamens and pistils

2. A peach blossom that has been bitten by pests cannot bear fruit, so the structure that has been bitten by insects is likely to be ( )

A. Perianth B. Corolla C. Stamens D. Pistil

3. The stems of eggplants bought from the market are often wrapped by several spiny leaf-like structures. This is which part of the eggplant flower remains ( )

A. Corolla B. Ovary C. Calyx D. Stamens

Many of the agricultural products we eat are the fruits of plants. Apples, grapes, and watermelons are fruits, sunflower seeds, and beans are fruits, and corn and wheat kernels are also fruits.

Many of the agricultural products people eat are seeds of plants. Broad beans and mung beans are seeds, sesame seeds and peanut beans are seeds, and watermelon seeds and almonds are also seeds.

Consolidate and improve:

1. What changes occur in the structure of each part of the flower during the development process from flower to fruit? Express it by connecting lines

2. Which structure in the flower is the peanut that is eaten daily developed from ( )

A. Ovary B. Ovule C. Stigma D. Style

3. The following are fruits ( )

A. Soybeans B. Sesame seeds C. Watermelon seeds D. Corn kernels

4. Some flowers bloom but do not bear fruit. For example, most of the flowers of cucumbers, pumpkins, and loofahs will not bear fruit. Have a chance to observe and explain this phenomenon.

Answer: The flowers of these plants are either male or female. Male flowers will not bear fruit.

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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...

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Update Time: 2024-10-02

This template belongs to biology courseware People's Education Edition seventh grade biology volume 1 industry PPT template

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