"From species to kingdom" Classification of living things according to their characteristics PPT courseware 4

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"From species to kingdom" Classification of living things according to their characteristics PPT courseware 4

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1. Basis for plant classification

Based on the ________ of plants, angiosperms often use __________ as an important basis.

2. Basis for animal classification

Based on the ___________, _______________ and _______________ of animals.

3. Classification method

Divide it into two parts and compare and arrange them step by step.

Preview:

1. Scientists divide living things into ______, ______ and several other kingdoms. Each realm is divided into six smaller levels. The seven levels of biological classification, from largest to smallest, are: ______. The smallest unit is ______.

2.A living thing is a ______. ______ is the most basic taxonomic unit, and ______ is the most closely related. The common characteristics are also the most ______.

3. The species wolf belongs to _______ kingdom _____ phylum _______ subphylum _______ class _______ order _____ family _____ genus _____ species.

4. Peach belongs to ____ kingdom ____ phylum ____ subphylum ____ class ____ order ____ family ____ genus ____ species.

1. Basis for biological classification

According to the degree of similarity between organisms in morphological structure and physiological function, they are divided into different levels of taxonomic units.

Each wolf is an individual animal, but all wolves belong to the same species of animal.

Coyotes are much smaller than wolves, but both animals have long bodies and significant interorbital bulges, so they are classified into the same genus, Canis.

The fox is an animal of another genus. The fox has a flat interorbital part, but it shares the same characteristics with wolves and coyotes such as a long face, protruding snout, and blunt claws that cannot be retracted. Therefore, it is classified into the same family. ——Canidae.

The tiger is an animal from another family. The tiger's claws are sharp and retractable, but like wolves, coyotes, and foxes, it has sharp canines, so they all belong to the order Carnivora.

Animals such as horses, rabbits, and bats are very different from wolves, coyotes, and foxes, but they all have the characteristics of viviparity and lactation, and they all belong to the class Mammalia.

2. Units of biological classification

Kingdom (Plant Kingdom, Animal Kingdom and several other kingdoms), which are further divided into: phylum, class, order, family, genus and species.

There is only one kind of organism in each species. Therefore, species is the most basic taxonomic unit, and the biological relationship of the same species is the closest.

Characteristics of biological taxonomic levels.

The biological classification level ______ (that is, the larger the unit), the types of organisms included are also ______, but the degree of similarity between organisms is ______. That is, the common characteristics are ______.

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.

discuss:

1. What are the units of biological classification? Please arrange them in order from smallest to largest.

2. What is the most basic unit of classification?

3. Horses can be divided into wild horses and domestic horses. Domestic horses also have many breeds. So, do they all belong to the same species?

4. A species is a living thing. Is this true? If it is wrong, how should we understand it?

3. The meaning of classification

If you want to learn more about the growth, development and behavior of the cabbage butterfly, which of the following books would you choose?

The significance of biological classification: Make the position of each species in biological classification clear at a glance. It can clarify the genetic relationship between organisms and better study and protect various organisms.

Class exercises

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. Regarding the description of taxonomic units, the correct statement is ( )

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

B. The smaller the taxonomic unit, the more common characteristics among the organisms it contains.

C. The larger the taxonomic unit, the closer the biological relationship is.

D. The size of the taxonomic unit has nothing to do with the number of common characteristics of the organisms included.

4． Among the following categories, the one that has the most in common is ( )

A. Species B． Genus C． Outline D. Door

5. Which of the following options has more common characteristics among living things ( )

A. Seed Phyta B. Rosales

C. Liliaceae D. Monocotyledonae

Textbook exercises

1. 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; conversely, the lower the level, the fewer types and differences. The smaller they are, the more common features they have.

Species is the lowest of the seven levels, and therefore, the creatures in this level have the most common characteristics.

2. Although bats can fly, they have no feathers and do not lay eggs. Therefore, 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.

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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: 2024-10-01

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

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