| Category | Format | Size |
|---|---|---|
| Beijing Normal University Edition Eighth Grade Biology Volume 2 | pptx | 6 MB |
"Evolution of Biology" PPT teaching courseware
Description
"Evolution of Biology" PPT teaching courseware
Part One: Learning Objectives
1. Through studying the theories of artificial selection and natural selection, understand the reasons for biological evolution and the reasons for the formation of biological adaptability.
2. Cultivate students' dialectical materialist views and improve students' ability to analyze and solve problems.
Biological Evolution PPT, Part 2: Learning New Knowledge
1. Darwin and the Origin of Species
Darwin observed and collected a large number of materials on animals, plants and geology, and summarized and analyzed them to form the concept of biological evolution.
1859 Published "The Origin of Species"
Darwin's research started with the phenomenon of biological variation that we are familiar with, and was inspired by the process of artificial selection to form new varieties.
What can we learn from the evolution of jungle fowl below?
2. Manual selection
How are several breeds of chicken different from jungle fowl?
How did these breeds of chicken come about?
According to human needs and hobbies, new biological varieties are formed through continuous selection.
Can you name the plant and animal species that have been cultivated through artificial selection in life?
Observe and think
Biological evolution can produce new species through artificial selection. So how do all kinds of creatures in nature evolve?
3. Natural Selection
Creatures in nature, after a fierce struggle for survival, survive by adapting to the environment, and those that do not adapt to the environment are eliminated. This is natural selection.
Evolution of living things PPT, part 3: feedback in class
1. The British naturalist Darwin published his masterpiece on the theory of biological evolution with the theory of natural selection as the core in 1859 ( )
A. "Population Theory" B. "Travel on the Beagle"
C. "Origin of Species" D. "Insects"
2. In the 1960s, the insecticidal effect of DDT was very good, but in the 1980s, the insecticidal effect declined significantly. The reason is ( )
A. A protective film against DDT is formed on the body surface of pests due to long-term contamination with DDT.
B. Long-term use of DDT leads to the production of anti-DDT antibodies in pests.
C. In the 1980s, DDT production levels declined and quality declined.
D. Natural selection increases the proportion of pests resistant to DDT.
Keywords: Beijing Normal University Edition Biology PPT courseware for eighth grade volume 2 free download, Evolution of Biology PPT download, .PPT format;
For more information about the PPT courseware "The Evolution of Biology, the Occurrence and Development of Life", please click the "Evolution of Biology ppt, the Occurrence and Development of Life" ppt tag.
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"Evolution of Biology" PPT free courseware:
"The Evolution of Biology" PPT free courseware Part One: The Origin of Biology There are many kinds of creatures in nature, and there are about more than 2 million species known to humans. So where do so many kinds of creatures come from? 1. Creationism 2. Evolution Evidence...
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Update Time: 2024-07-04
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