"Algae, Moss and Ferns" What are the green plants in the biosphere PPT courseware 7

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"Algae, Moss and Ferns" What are the green plants in the biosphere PPT courseware 7

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1. How many and approximately how many types of green plants are there in the biosphere? What types of groups can it be divided into?

2. What kind of environment do algae, moss and ferns live in?

3. How do the roots, stems and leaves of algae, mosses and ferns differentiate?

4. Why can bryophytes be used as indicator plants for detecting air pollution levels?

5. How do algae, mosses and ferns reproduce?

There are more than 500,000 known species of green plants in the biosphere. They have different shapes and different living environments, and can be divided into four major groups: algae, mosses, ferns and seed plants.

learning target:

1. Overview the morphological characteristics and living environment of algae, mosses and ferns.

2. Explain the role of algae, mosses and ferns in the biosphere and their relationship with humans.

3. Develop the habit of paying attention to various green plants in the biosphere and their living conditions.

Learning task one: Algae plants

Read pages 72-74 of the textbook carefully and solve the following questions.

1. What kind of environment do algae plants live in?

2. (1) Are all algae plants multicellular?

(2) How are the roots, stems and leaves of algae differentiated?

(3) What part do algae plants rely on to absorb water and inorganic salts?

3. What is the relationship between algae and human life?

4. List several algae plants you know.

Learning Task 2: Bryophytes

Read pages 74-75 of the textbook carefully and solve the following questions.

1. What kind of environment do bryophytes live in?

2. Are bryophytes tall or short? What kind of differentiation is there? But what’s not in the stem? What's not in the leaves? What is the root called?

3. Why can bryophytes be used as indicator plants for monitoring air pollution levels?

Apply what you learn

Among algae, mosses, and ferns, which type of plant has conductive tissue? Talk about the importance of conductive tissue to the life and growth of terrestrial plants?

Among algae, mosses, and ferns, ferns have conductive tissue. The emergence of conductive tissue greatly improved the ability of plants to transport water, inorganic salts and organic matter, thus enabling plants to live on land.

Compliance assessment

1. Which plant can be used as an indicator plant for monitoring air pollution levels ( )

A. Algae B. Ferns C. Bryophytes D. Seed plants

2. Compared with bryophytes, the reason why ferns are more suitable for living on land is ( )

A. The fertilization process does not require water. B. There are xylem and mechanical tissues in roots, stems, and leaves.

C. There are conductive tissues in roots, stems and leaves D. Spores reproduce

3. Kidney fern has beautiful leaves and is easy to plant. It is often cultivated as an ornamental plant. How should potted kidney fern be managed to make it grow well ()

A. Place in a sunny place and water less. B. Place in a sunny place and water more.

C. Place in a shady place and water less. D. Place in a shady place and water more.

4. "The spring color of the West Lake has returned, the spring water is greener than the dye" and "The upper steps of the moss marks are green, and the color of the grass is green in the curtains" respectively describe the natural landscape of two types of plants after they multiply in large numbers. These two types of plants are:

A.Algae and ferns B.Algae and bryophytes

C. Bryophytes and ferns D. Bryophytes and algae

5. The most important source of oxygen in the atmosphere is ( ).

A. Photosynthesis of algae B. Photosynthesis of mosses

C. Photosynthesis of ferns D. photosynthesis in forests

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

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Update Time: 2024-09-08

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

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