"From Species to Kingdom" PPT courseware on classifying organisms according to their characteristics

Description

"From Species to Kingdom" PPT courseware on classifying organisms according to their characteristics

Knowledge goal

1. Master the seven levels of biological classification;

2. It is clear that "species" is the most basic unit and the biological relationship is the closest;

3. Outline the basis and significance of biological classification.

Can you do it through self-study?

1. What are the taxonomic units of living things? They are, from largest to smallest, as follows: __________________, among which ____ has the fewest species, the most common characteristics, and the smallest differences between individuals. _____ has the most species, the fewest common characteristics, and the smallest differences among individuals. The biggest difference.

2. What is the most basic unit of classification?

3. Is a species a living thing?

4. Biologists mainly use ____________________ to classify organisms?

5. Are organisms of the same species most closely related, or organisms of the same world?

6. In botanical gardens or parks, we can often see signs with various plants. Please think about it carefully. In addition to the name of the plant, which level of the classification unit is usually written on it? Which taxonomic unit must the first word of the plant's Latin name represent?

Think about it, discuss it

Bees are animals, invertebrates, arthropods, and insects. Why do the same animals have different group names?

There are many kinds of creatures in nature, and they need to be classified. Bees are animals, invertebrates, arthropods, and insects, which shows the position of bees in different classification levels. Different groups belong to different classification levels. It can be seen that the same animal must be named by different groups, which is the need for biological classification!

Biological classification is a basic method for studying organisms

On what basis do biologists classify organisms?

Based on the degree of similarity of organisms (including morphological structure and physiological functions, etc.).

What is the method of classifying organisms?

Divide organisms into different levels such as species and genera, and scientifically describe the morphological structure, physiological functions and other characteristics of each group.

What is the significance of biological classification?

Understand the genetic and evolutionary relationships between different taxa.

Plant classification and identification:

In the process of plant classification and identification, the study of family characteristics is the basis of plant classification research. Once we understand the main characteristics of the family, we can more easily identify and identify plants. Therefore, "family" is a very important taxonomic unit in plant classification. When identifying plants, the first taxonomic unit we should identify is "family".

Ask students to think about it: What are the plant branches we have learned in previous studies? Give an example.

Further thoughts:

The smaller the taxonomic unit, the more common characteristics ( ), the more groups ( ), the more species it contains ( ), and the more closely related it is ( ).

The larger the taxonomic unit, the more common characteristics ( ). The larger the group ( ), the more species it contains ( ) and the more closely related it is ( ).

Expansion 1: Please think about it: If two or more organisms belong to a smaller taxonomic unit, do they also belong to a larger taxonomic unit? On the contrary, if two or more organisms belong to a larger taxonomic unit, do they also belong to a smaller taxonomic unit? Give an example.

Therefore: two or more organisms that belong to a smaller taxonomic unit must also belong to a larger taxonomic unit. On the contrary, if two or more organisms belong to a larger taxonomic unit, they do not necessarily belong to a smaller taxonomic unit.

Expansion 2: Biological Boundaries

Kingdom Prokaryotes: This kingdom includes all organisms that lack a nuclear membrane, mainly bacteria.

Kingdom Protista: Protists include simple eukaryotic organisms (that is, having a true nucleus), which are single-celled organisms. This kingdom is the lowest among eukaryotes.

Class Exercise 1

1. The closest relationship among the following is ( )

A. Gang B. division

C. Genus D. kind

2. The species we usually refer to are ( )

A. A living thing B. a group of creatures

C. A large number of organisms D. a creature

3. Among the following taxonomic units, the one with the smallest degree of difference in traits between organisms is ( )

A realm B phylum C class D department

small test:

1. Among the following statements about classification units, which one is correct ( )

A. The larger the taxonomic unit, the fewer biological species it contains.

B. Organisms of the same species are most closely related

C. In the same taxonomic unit, the characteristics of organisms are exactly the same.

D. A species is a living thing

2. Among the following statements, which one is correct ( )

A. The smaller the taxonomic unit, the fewer common characteristics and the more distant the genetic relationship.

B. Scientific naming of organisms on signs is generally in English.

C. In each taxonomic unit, the biological individuals of the same species have the closest genetic relationship.

D. Lodging-prone wheat and lodging-resistant wheat are two different species.

3. Among the following classification levels, which level of plants has more of the same characteristics ( )

Genus A. Family B. Class C. Order D.

4. Which of the following descriptions of species is incorrect ( )

Organisms of the same species must belong to the same genus

B Organisms of the same genus must be of the same species

C Mammals of the same species can produce offspring through sexual reproduction, and the offspring also have reproductive functions

Plants of the same species can produce offspring through artificial pollination

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For more information about the PPT courseware "Classification of organisms according to their characteristics, from species to kingdoms", please click the Classification of organisms according to their characteristics ppt, from species to kingdoms ppt tag.

"From Species to Kingdom" Classification of Organisms Based on Characteristics PPT Courseware 7:

"From Species to Kingdom" Classification of Organisms Based on Characteristics PPT Courseware 7 Bees are both animals, invertebrates, arthropods, and insects. Why do the same animals have different group names? Different taxa belong to different taxonomic levels. Give bees different names..

"From species to kingdom" Classification of organisms according to their characteristics PPT courseware 6:

"From Species to Kingdom" Classification of Organisms Based on Characteristics PPT Courseware 6 Think about it and discuss it. Bees are animals, invertebrates, arthropods, and insects. Why do the same animals have different group names? In order to classify living things scientifically,...

"From species to kingdom" Classification of living things according to their characteristics PPT courseware 5:

"From Species to Kingdom" Classification of Organisms Based on Characteristics PPT Courseware 5 Reading Outline P85-89 1. Why should organisms be classified? 2. What are the classification units from large to small? 3. What is the most basic classification unit? 4. Which level of creatures has the most common characteristics?

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Update Time: 2024-11-22

This template belongs to biology courseware People's Education Edition Biology for Grade 8, Volume 1 industry PPT template

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