"Try to classify living things" Classification according to the characteristics of living things PPT courseware 4

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"Try to classify living things" Classification according to the characteristics of living things PPT courseware 4

If you wanted to learn more about the growth, development and behavior of crabs, which of the above books would you choose?

Understanding biological diversity and protecting biological diversity require classifying organisms.

Biological classification: mainly classifying organisms into different levels such as species and genera based on the degree of similarity of organisms, and scientifically describing the morphological structure and other characteristics of each group to clarify the genetic and evolutionary relationships between different groups.

Basis for classification: characteristics of organisms in terms of morphological structure and other aspects.

The basic unit of classification—species

1. Classification of plants

Observe and think:

1. Do all plants have seeds?

2. Are the seeds covered with pericarp?

3. Are the number of cotyledons in beans and corn seeds the same? What kind of plant has two cotyledons? What is a plant with one cotyledon?

4. Are the leaf veins of all plants the same? What are the characteristics of parallel veins and reticular veins?

5. Do all plants have roots, stems, and leaves?

6. What is the function of rhizomes?

7. What is the basis for classifying plants?

discuss:

1. Corn - Category A plants; Sunflower - Category B plants

Pinus tabulaeformis - D plant; kidney fern - D plant

Calabash moss - E plant; Spirogyra - F plant

2. Do not belong to the same classification level. (A and B grades are low)

A: Seed plants - angiosperms - monocots - corn

B: Seed plants - angiosperms - monocots - sunflowers

E: Seedless plants - ferns - kidney fern

Exercise: Fill in the blanks

Among all plant groups, plants that can produce seeds are called __________, which are further divided into __________ and __________; the other type is __________ plants, which reproduce by __________, which are also divided into_ __________ plants, __________ plants and __________ plants.

Compared with corn, sunflower and pine trees, the seeds of the former two are covered with __________, so they are called ________ plants. Compared with corn and sunflower, sunflower seeds have ________ cotyledons, so they are called ________ plants, while corn is a ________ plant.

reward

1. Basis for plant classification

Based on the morphological structure of plants, angiosperms often use flowers, fruits and seeds as important basis.

2. Basis for animal classification

Based on the external morphological structure, internal structure and physiological functions of animals.

Classification exercise

Suppose you want to organize your bookshelf. How should you place the following books so that you can easily find the books you need? They are: "Dragon", "Dream of Red Mansions", "Swordsman", "Slam Dunk", "Mathematics Practice", "New Concept English", "Crayon Shin-chan", "Children's Encyclopedia" , "Physics Exercises Collection", "Water Margin".

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For more information about the PPT courseware "Classification Based on the Characteristics of Living Things and Trying to Classify Living Things", please click Classification Based on the Characteristics of Living Things PPT Trying to Classify Living Things PPT tag.

"Trying to Classify Organisms" Classification according to the characteristics of organisms PPT courseware 9:

"Trying to Classify Organisms" Classifying Organisms Based on Their Characteristics PPT Courseware 9 Reviewing the Past and Learning the New 1. Do all plants have seeds? 2. Do all plants have roots, stems, and leaves? 3. What is the function of roots? 4. Are the seeds covered with pericarp? 5...

"Trying to Classify Organisms" Classification according to the characteristics of organisms PPT courseware 8:

"Trying to Classify Organisms" Classifying Organisms Based on Their Characteristics PPT Courseware 8 By studying this section, you will know: 1. What is the basis for classifying organisms? 2. How to classify organisms according to their characteristics? 3. What is the purpose of biological classification?

"Trying to Classify Organisms" Classification according to the characteristics of organisms PPT courseware 7:

"Trying to Classify Organisms" Classifying Organisms Based on Their Characteristics PPT Courseware 7 Teaching Objectives: 1. What is the basis for classifying organisms? 2. How to classify organisms according to their characteristics? Think about it and discuss it. If you want to know about the life of the cabbage butterfly...

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Update Time: 2024-07-29

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

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