"Seed Plants" What are the green plants in the biosphere PPT courseware 3

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"Seed Plants" What are the green plants in the biosphere PPT courseware 3

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1. Algae plants do not have the differentiation of organs such as _____, _____ and _____. Most live in _____.

2. Bryophytes have _____, _____, _____, and there are no _____ tissues in their bodies.

3. Ferns have organs such as _____, _____ and _____, and there are _____ tissues in their bodies.

What these three types of plants have in common is that they all use _____ to reproduce

Explore new knowledge (1)

Students worked in groups to observe the structure of soybean seeds.

Kind tips

Observe the parts of each structure;

State the function of each structure;

1. Structure of soybean seeds

Seed coat protective effect

Radicle: The root that develops into a plant;

Hypocotyl: develops into the part that connects the stem and the root;

Germ: develops into stems and leaves;

Cotyledons: provide nutrients.

Explore new knowledge (2)

Students worked in groups to observe the structure of corn seeds.

Kind tips:

Pay attention to the steps;

Observe the parts of each structure;

State the function of each structure;

Pay attention to knife safety.

Challenge you, me, him

1. What is the function of seed coat?

It has the function of protecting the internal structure of seeds.

2. What is the function of the cotyledons of legumes?

Stores nutrients and is the source of nutrients for the embryo to develop into seedlings.

3. Turning blue when exposed to iodine is a characteristic of starch. What does it mean when corn endosperm turns blue when exposed to iodine?

Corn endosperm contains starch

Guess the riddle: A hemp house, a red tent, and a fat white man living inside. (Punch a plant fruit)

"Red tent" refers to the _____ of seeds.

"White fat man" refers to the _____ of the seeds.

The secret that a seed can germinate into a big tree lies in the presence of ( ) in the seed.

A. Endosperm B. Embryo

C. Germ D. Cotyledons

1. Angiosperms have six organs: ＿＿,＿＿,＿＿,＿,＿＿,＿＿. The outside of the seeds are coated, also called ＿＿＿＿＿＿＿. They are the highest group in the biosphere, with the strongest adaptability, the most species, and extremely wide distribution. .

2. The mung bean sprouts we eat are mainly developed from which of the following ( ).

A. Germ B. Radicle

C. Hypocotyl D. Cotyledons

3. Which of the following plants is a seed plant ( )

A. Kelp B. Willow c. Maidenhair fern D. Azolla

4. Compared with peach trees, the main difference between pine trees is ()

A. There are seeds in the fruit

B． No peel seeds are exposed outside

C. The ovule is protected by the ovary

D. Cones are fruits with seeds covered by the pericarp.

2. The picture on the right is a schematic structural diagram of kidney bean seeds. Please analyze and answer:

(1) Write the names of the following structures: Structure 4 is ______, Structure 8 is ______.

(2) The main structure of corn seeds is ____, which is composed of ________ in the picture (fill in the serial number)

(3) The structure of nutrient storage in corn seeds is [ ]_______.

(4) The main structural difference between bean seeds and corn seeds is ____________

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For more information about the PPT courseware "What are the green plants and seed plants in the biosphere?", please click the What are the green plants in the biosphere ppt seed plants ppt tag.

"Seed Plants" What are the green plants in the biosphere PPT courseware 8:

"Seed Plants" What are the green plants in the biosphere PPT courseware 8 By watching, we know that plant seeds come in various shapes and sizes, but their structures are the same. Complete the experiment according to the content on page p79 of the book. Basic steps for observing living organisms -..

"Seed Plants" What are the green plants in the biosphere PPT courseware 7:

"Seed Plants" What are the green plants in the biosphere PPT courseware 7 Learning objectives 1. Name the main structure of seeds, and describe the similarities and differences between bean seeds and corn seeds. 2. Use observation methods to identify the structure of seeds. 3. Identify common gymnosperms in the local area..

"Seed Plants" What are the green plants in the biosphere PPT courseware 6:

"Seed Plants" What are the green plants in the biosphere PPT courseware 6 Observing the structure of seeds Purpose requirements: 1. Understand the structure of seeds. 2. Learn how to observe the structure of seeds. Materials and tools: Soaked beans and corn seeds, razor blade, magnifying glass, pipette..

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Update Time: 2024-11-22

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

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