"Evolution of Biology" PPT download

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"Evolution of Biology" PPT download

Part One: Learning Objectives

1. Be able to summarize the evidence of biological evolution and understand the basic process of biological evolution.

2. Be able to briefly explain the evolutionary rules of organisms.

Paleontological evidence

Thought 1: Why are some creatures in fossils similar to some living creatures today?

What are fossils?

Fossils: The remains, relics, and relics of ancient organisms preserved in the strata through the action of nature.

Thinking 2: Judging from the biological structure of fossils, what is the development trend from early to late stages?

Evolution of Biological PPT, Part 2: Evidence of Biological Evolution

Direct evidence of biological evolution - fossils

The strata formed earlier

The fewer types of organisms

The simpler and lower the structure

Strata formed later

The more species there are

The more complex and advanced the structure

Evolution of Biology PPT, Part 3: Geological Time and Biological Evolution History

Types of life in the Precambrian period

4.6 billion years ago: The formation of the original Earth

3.5 billion years ago: Bacteria, cyanobacteria and other non-cell nuclear organisms

2.0 to 1.9 billion years ago: Single-celled organisms with nuclei

8.5 to 540 million years ago: multicellular organisms

Early Paleozoic life types

1. Higher algae plants

2. Invertebrates

3. Trilobites flourish

Biological Evolution PPT, Part 4: Summary

Paleozoic Era: Early Period: Invertebrates, Higher Algae

Middle period: Fish are prevalent and terrestrial ferns appear for the first time

Later stage: Amphibians and winged insects that can land appear.

Mesozoic Era: Gymnosperms and reptiles prevailed

Cenozoic Era: Birds and mammals dominate, and angiosperms become the dominant plants

Evolution of living things PPT, part 5, summary of this lesson

1. Fossil records show:

1. In the ancient strata formed early, there are few types of fossil organisms, and the structure is simple and low-level; in the strata formed later, there are many types of fossil organisms, and the structure is complex and advanced.

2. The general trend of biological evolution: from simple to complex, from low to high, from aquatic to terrestrial.

2. History of life on earth:

Archean Era, Proterozoic Era, Paleozoic Era, Mesozoic Era, Cenozoic Era

Evolution of living things PPT, part 6, in-class exercises

1. The animals and plants that flourished on land during the Mesozoic Era are ( )

A. Amphibians, ferns B. Reptiles, gymnosperms

C. Mammals, angiosperms D. Fish, algae

2. Which of the following statements about biological evolution trends is unreasonable ( )

A. Single-celled organisms---Multicellular organisms

B. Small creatures---large creatures

C.Simple structure---Complex structure

D. Lower organisms---higher organisms

3. The period when dinosaurs and pterosaurs were very prosperous was ( )

A. Proterozoic Era B. Paleozoic Era

C. Cenozoic Era D. Mesozoic Era

4. The period when primates evolved into humans is ( )

A. Mesozoic Era B. Cenozoic Era

C. Archean Era D. Proterozoic Era

Keywords: Beijing Normal University Edition Biology PPT courseware for eighth grade volume 2 free download, Evolution of Biology PPT courseware, .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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Update Time: 2024-10-02

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