"From species to kingdom" Classification of organisms according to their characteristics PPT courseware 2

Description

"From species to kingdom" Classification of organisms according to their characteristics PPT courseware 2

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!

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.

In order to scientifically classify organisms and clarify the genetic relationships between organisms, biologists divide organisms into different levels of taxonomic units based on the degree of similarity between them.

Organisms are divided into plant kingdoms, animal kingdoms and other kingdoms.

Each kingdom is divided into six smaller levels, from largest to smallest: phylum, class, order, family, genus, and species.

biological classification

Biological classification: It is a basic method for studying organisms.

The basis for biological classification is based on the degree of similarity of organisms (including morphological structure and physiological functions, etc.).

The method of biological classification is to divide organisms into different levels such as species and genera, and scientifically describe the morphological structure, physiological functions and other characteristics of each group.

The significance of biological classification is to clarify the genetic and evolutionary relationships between different groups.

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".

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.

practise

1. Among the seven levels of kingdom, phylum, class, order, family, genus, and species, which level of organisms do you think has the most common characteristics? Which level has the least? Tell us your reasons.

Organisms within a species have the most common characteristics, while organisms within a kingdom have the least common characteristics. Because classification is based on the common characteristics of different organisms, the higher the classification level, the more types of organisms it contains, and the greater the differences between them, that is, the fewer common characteristics, and vice versa. Species is the lowest of the seven levels, and therefore, the creatures in this level have the most common characteristics.

2. Bats can fly, but taxonomically they belong to the class Mammalia, not the class Birds. Please tell me why.

Although bats can fly, they are different from birds: they have no feathers and do not lay eggs, so they do not belong to the class Birds. Bats are viviparous and lactating, which are the same characteristics as mammals, so they belong to the class Mammalia.

3. In botanical gardens or parks, you can often see signs of various plants. The name of the plant, which family it belongs to, its distribution and uses are written on the sign. The foreign text on the sign is in Latin, preceded by the genus name, followed by the species epithet, indicating the common international name of the plant. Under the guidance of the teacher, read books on classification and try to put signs on the plants on campus.

extracurricular activities

In botanical gardens or parks, we can often see signs with various plants. Please try to make a sign for a certain plant on campus that you learned about before class.

Rose

Rosa chinensis Jacquem

Commonly known as Yueyuehong, also known as periwinkle, moonflower, etc., from the Rosaceae family. Originating in China, its distinctive features are continuous blooming all year round, smooth leaves, and hooked thorns on the stems.

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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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