"Ecosystem Overview" PPT

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"Ecosystem Overview" PPT

Part 1: What is an ecosystem?

The Kaiba Forest in North America is mainly composed of pine, fir and spruce, with a variety of herbaceous plants growing in the forest understory. More than 100 years ago, there were approximately 4,000 black-tailed deer in the forest eating leaves or herbs. Wolves feed on black-tailed deer, and vicious cougars often hunt wolves and black-tailed bears. In the forest, the sun shines brightly, the air is fresh, the soil is fertile, the water is sufficient, and the temperature is suitable... Indians and various creatures live harmoniously in this forest, and the forest presents a vibrant scene everywhere.

think

1. What creatures living in the Kaiba Forest can be seen in the picture?

Answer: There are pine, fir, spruce, herbaceous plants; black-tailed deer, people, cougars, wolves and coyotes.

2. In addition to the creatures shown in the picture, what other types of creatures exist in this forest?

Answer: There are birds, fish, bacteria, fungi, viruses, etc.

3. What conditions do black-tailed deer need to survive in the Kaiba Forest?

Answer: Food, water, air, etc.

4. To ensure the survival of various organisms, what other conditions should be present in the forest?

Answer: slightly

Ecosystem overview PPT, part 2: Types of ecosystems:

Can you try to tell what types of ecosystems there are?

Forest ecosystem: Distributed in relatively humid areas, with a wide variety of animals and plants, it is known as a "green reservoir"

Farmland ecosystem: mainly crops, with relatively few species of animals and plants.

Urban ecosystem: low plant species and quantity. Consumers are primarily humans.

Freshwater ecosystem: composed of freshwater waters and freshwater organisms.

Wetland ecosystem: swamp plants dominate, and there are many types of animals. It has the functions of purifying water sources, storing floods and fighting droughts.

Grassland ecosystem: distributed in arid areas with relatively few species of animals and plants.

Marine ecosystem: Plants are mainly phytoplankton, and there are many types of animals.

Ecosystem overview PPT, part three: thinking

1. What are the roles of producers, consumers, and decomposers in the ecosystem?

Producer----produces organic matter through photosynthesis to provide material and energy for various organisms

Consumers - eat plants directly or indirectly

Decomposer - decomposes plant and animal remains and animal waste into inorganic matter.

2. What is the relationship between producers, consumers and decomposers?

1. Producers create organic matter to provide food and habitat for consumers.

2. Consumers play an important role in plant pollination, fertilization and seed dispersal.

3. Decomposers decompose animal and plant remains into inorganic matter.

Ecosystem overview PPT, Part 4: Thoughts and exercises

1. The picture below shows a part of a forest with a stream flowing through rocks covered with bryophytes. Observe this picture, analyze the status and role of various organisms in the picture in the ecosystem, and fill in the analysis results in the table.

2. Which of the following groups of organisms are decomposers in ecosystems? ( )

A. Bryophytes and ferns B. Bacteria and mushrooms

C. Rats and mule deer D. Mosquitoes and fleas

3. Human beings are also members of the ecosystem. What role do humans play in the ecosystem? ( )

A. Producer B. Consumer

C. Producers and consumers D. Decomposers

Keywords: Free download of Beijing Normal University edition biology PPT courseware for eighth grade volume 2, ecosystem overview PPT download, .PPT format;

For more information about the "Ecosystem and its Stability Ecosystem Overview" PPT courseware, please click the Ecosystem and its Stability ppt Ecosystem Overview ppt tag.

"Ecosystem Overview" PPT download:

"Ecosystem Overview" PPT Download Part One: What is an Ecosystem? The Kaiba Forest in North America is mainly composed of pine, fir and spruce. A variety of herbaceous plants also grow in the bottom layer of the forest. More than 100 years ago, there were about 4,000 black-tailed deer in the forest eating leaves...

"Ecosystem Overview" PPT courseware:

"Ecosystem Overview" PPT courseware Part One: Learning Objectives 1. State the concept of ecosystem. 2. Outline the composition of ecosystems and concepts such as producers, consumers, and decomposers. 3. Understand the role of various components in ecosystems. ... ....

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Update Time: 2024-12-04

This template belongs to biology courseware Beijing Normal University Edition Eighth Grade Biology Volume 2 industry PPT template

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