"Algae, Moss and Ferns" What are the green plants in the biosphere PPT courseware 5

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"Algae, Moss and Ferns" What are the green plants in the biosphere PPT courseware 5

1. Algae plants

The spring color of West Lake has returned, and the spring water is greener than dye.

When the sun rises, the flowers on the river are as red as fire, and when spring comes, the river is as green as blue

Observe and think

1. What environment do these algae plants live in?

2. Do algae plants have roots, stems, leaves and other organs?

3. What role do algae plants play in the biosphere? What does it have to do with human life?

1. Living environment

Most live in water (freshwater, seawater)

2. Morphological characteristics

1. Plants are single-celled or multi-celled

2. No roots, stems or leaves

3. Relationship with humans

2. Bryophytes

Observe and think

1. What are the differences in the living environment between bryophytes and algae?

Lives on damp ground, shady walls, and in the shade of tree trunks

2. From a morphological point of view, what are the main differences between bryophytes and algae? Does this have anything to do with their lives?

Bryophytes live in humid terrestrial environments. The plants are short and weak. They generally have stems and leaves, but there are no vessels in the stems, no veins in the leaves, and very simple roots, called rhizoids.

Living environment: On damp land

Morphological characteristics:

1. Short, with stems, leaves and rhizomes

2. No guidance organization

Relationship with humans:

It can be used as an indicator plant to monitor the level of air pollution.

3. Ferns

Living environment: On damp land

Morphological characteristics:

1. Having roots, stems and leaves

2. Have a guiding organization

Relationship with humans:

① Edible ② Can be used for medicinal purposes

③Can be used as green manure and feed;

④ Ancient ferns are related to the formation of coal.

practise

Among the following algae plants, which one is single-celled ( )

A Seaweed B Kelp C Spirogyra D Chlamydomonas

The aboveground part of kidney fern is ( )

AThe whole plant BRoots, stems, leaves

C stem and leaves D blade and petiole

The differentiated organs of bryophytes are ( )

A roots, stems, leaves B fruits, seeds

C stems, leaves D flowers, seeds

The main source of oxygen in the Earth's atmosphere is ( )

A seed plant B gymnosperm

C ferns D algae

Which of the following plants has roots, stems, and leaves? ( )

A Kelp B Calabash moss C Spirogyra D Adiantum fern

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

"Algae, Moss and Ferns" What are the green plants in the biosphere PPT courseware 7 Preview Outline 1. How many green plants are there in the biosphere and how many species are there? What types of groups can it be divided into? 2. What kind of environment do algae, moss and ferns live in?

"Algae, Moss and Ferns" What are the green plants in the biosphere PPT courseware 6:

"Algae, Moss and Ferns" What green plants are there in the biosphere PPT courseware 6 Think about it: What structures do kelp and seaweed eat? Thinking: 1. What environment do these algae plants live in? Most algae plants live in water, and a few species live in...

"Algae, Moss and Ferns" What are the green plants in the biosphere PPT courseware 4:

"Algae, Moss and Ferns" What are the green plants in the biosphere PPT courseware 4 Seed plants: Among green plants, plants that can bloom and produce seeds are called seed plants. There are more than 500,000 known species of green plants in the biosphere. They have different shapes and life...

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Update Time: 2024-11-14

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

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