Fifth Grade Science Volume 1, Textbook Edition
Science Edition for Sixth Grade Science Volume 2
Science Edition for Sixth Grade Science Volume 1
Third Grade Science Volume 2, Textbook Edition
Third Grade Science Volume 1, Textbook Edition
Fourth Grade Science Volume 2, Textbook Edition
Fourth Grade Science Volume 1, Textbook Edition
Fourth-grade science volume 2 of the E-education edition
Qingdao Edition Fourth Grade Science Volume 2
Hunan Education Edition Fourth Grade Science Volume 1
E-education edition fifth grade science volume 1
E-education edition fifth grade science volume 2
E-education edition sixth grade science volume 1
Fifth Grade Science Volume 2, Textbook Edition
Qingdao Edition Fourth Grade Science Volume 1
Zhejiang Education Edition Seventh Grade Science Volume 2
Category | Format | Size |
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Fifth Grade Science Volume 1, Textbook Edition | pptx | 6 MB |
Description
"Food Chains and Food Webs" Biology and Environment PPT Courseware 3
Who eats whom?
think?
What animals are usually found among flowers?
What do the little animals in the flowers eat?
Who is eaten by whom
Food is one of the most important needs for animals to survive.
What is the food relationship between the creatures in the flowers? Try to arrange this relationship in order of "who is eaten by whom".
Producer: An organism in the food chain that can make its own food
Consumer: An organism that directly or indirectly consumes food produced by others
Look at the picture to find out the producers and consumers
Observe, compare and think: Where does the food chain start and end?
Note: The food chain starts with green plants and ends with ferocious carnivores.
think?
If one organism becomes extinct, what happens to the entire food web?
In the ecosystem shown above, foxes normally feed on rabbits and rats. Rabbits and rats are also prey for owls. Of course, owls also feed on other animals, such as birds and snakes. In this way, rabbits and rats are in multiple food chains. However, if humans cull rats, owls, especially foxes, will only be able to feed on rabbits. Without rats, the number of foxes and owls in the food chain is also reduced, causing foxes and owls to become overly dependent on rabbits for food. Over time, rabbit numbers declined, eventually leaving the foxes without prey and disappearing from the ecosystem.
Class Summary Food Chains and Food Webs
Grass---Locust---Frog---Snake---Eagle
The food relationship between living things like this chain link is called a food chain.
The complex food relationships between organisms form a network structure called a food web
The same plant is eaten by different animals, and the same animal can eat a variety of foods.
If one creature becomes extinct, it will affect the survival of many other creatures. Therefore, protecting one creature means protecting many kinds of creatures.
after class homework
Observe the surrounding environment and draw a food web
Based on what is taught in this lesson, think about the following questions:
What role do people play in the food chain of "grass---fish---people"? And collect information on the relationship between people and nature.
Keywords: biology and environment teaching courseware, food chain and food web teaching courseware, textbook fifth grade science PPT courseware download, fifth grade science slide courseware download, biology and environment PPT courseware download, food chain and food web PPT courseware download,. PPT format;
For more information about the "Biology and Environment Food Chain and Food Web" PPT courseware, please click the "Biology and Environment ppt Food Chain and Food Web ppt" tab.
"Food Chains and Food Webs" Biology and Environment PPT Download:
"Food Chains and Food Webs" Biology and Environment PPT download Part 1: Who is eaten by whom Food is one of the most important needs for animal survival. Tell me, what kind of creatures might be in a cluster of flowers? We found the following creatures in a cluster of flowers and discussed...
"Food Chains and Food Webs" Biology and Environment PPT:
"Food Chain and Food Web" Biology and Environment PPT Part One Content: New Lesson Learning There are roses, grass, leaves, aphids, ladybugs, earthworms, birds, and natural conditions such as water, sunlight, and air in the flowers. They are interdependent and influence each other. ..
"Food Chains and Food Webs" Biology and Environment PPT Courseware 4:
"Food Chains and Food Webs" Biology and Environment PPT Courseware 4 Guess what interesting things will happen between them? What is the relationship between them? Discussion: What do the animals here eat? What kind of relationship do they have? Everyone follows who gets eaten by whom...
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Update Time: 2024-10-20
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