"Main Groups of Animals" PPT courseware download

Description

"Main Groups of Animals" PPT courseware download

Part One: Scenario Introduction

Please observe carefully, what kind of animals are they? What are their common characteristics?

learning target

1. Recognize common species of reptiles, birds, and mammals and learn their characteristics.

2. Understand the evolution of vertebrates from aquatic to terrestrial life by studying different groups of vertebrates. Experience the diversity of animal species.

3. Through learning about the relationship between different groups of animals and humans, the emotion of loving and protecting animals can be further strengthened.

PPT on the main groups of animals, part 2: animal classification

reptile

Reptiles are the first vertebrates to truly get rid of their dependence on water and truly conquer land. They can adapt to various terrestrial living environments.

1. Common reptiles

The main existing reptiles include wedge-toothed lizards, turtles, lizards, snakes, and crocodiles. There are fewer species, about 5,700 species in the world.

2. Main characteristics of reptiles

Body surface covered with horny scales or nails; breathing with lungs; incomplete diaphragm in ventricle; internal fertilization; tough egg shell on egg surface; unstable body temperature.

3. The relationship between reptiles and humans

Edible;

as industrial raw materials;

Can be used as medicine;

Devouring insects and ants;

as an indicator creature.

birds

1. Common birds

2. Main characteristics of birds

It has a beak and no teeth; it is covered with feathers; the forelimbs become wings; the bones are hollow and filled with air; the heart is divided into four chambers; it breathes with lungs and has air sacs to assist breathing; the body temperature is constant; reproduction is oviparous.

3. The relationship between birds and humans

Maintain ecological balance and control agricultural and forestry rodent and insect pests

PPT on the main groups of animals, part 3: Class summary

1. Reptiles

1. Main features: The body surface is covered with scales to prevent water loss, it breathes with lungs, its heart has two atria and one ventricle, internal fertilization, it is a cold-blooded animal, and it is a true land animal that can get rid of water.

2. Application: It can be used as leather products and valuable medicinal materials. It is the natural enemy of some harmful animals. The alligator is a rare reptile unique to the country.

2. Birds

1. Morphological and structural characteristics: The body is streamlined; the forelimbs are specialized into wings; the body surface is covered with feathers to reduce air resistance, lays eggs, and maintains a constant body temperature.

2. Application: Maintaining ecological balance, controlling rodent and insect pests in agriculture and forestry, and is an important food for humans.

3. Mammals: The body surface is covered with hair, the body temperature is constant, the brain is developed, and viviparous lactation is achieved.

PPT on the main groups of animals, part 4: training to meet standards

1. Among the following animals, the group that truly belongs to terrestrial vertebrates is ( ).

A. Fish B. Reptiles

C. Amphibians D. Arthropods

2. Mammals generally have well-developed fur on their bodies, whose main function is ( )

A.Protect B.Disguise

C. Defense D. Insulation

Keywords: Beijing Normal University Edition Biology PPT courseware for eighth grade volume 2 free download, PPT download of the main groups of animals, .PPT format;

For more information about the "Diversity of Species and Main Groups of Animals" PPT courseware, please click the "Diversity of Species ppt and Main Groups of Animals" ppt tag.

"Main Groups of Animals" PPT download:

"Main Groups of Animals" PPT Download Part One: Scenario Introduction Everyone observe carefully and tell what kind of animals they are? What are their common characteristics? Learning objectives 1. Understand the main groups of vertebrates and their evolutionary trends. 2. Master fish, amphibians...

"Main Groups of Animals" PPT courseware:

"Main Groups of Animals" PPT courseware Part One: Scenario Introduction Everyone observe carefully, please tell what kind of animals they are? What are their common characteristics? Learning objectives 1. Understand common segments, soft bodies, arthropods and echinoderms and their main characteristics. 2...

"Main Groups of Animals" PPT:

"Main Groups of Animals" PPT Part One Content: Scenario Introduction Animals in nature are of all kinds, diverse, and have vastly different shapes. Approximately how many species are known so far? What animal do you know has the most variety? What is the largest animal? Minimum..

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Update Time: 2024-09-02

This template belongs to biology courseware Beijing Normal University Edition Eighth Grade Biology Volume 2 industry PPT template

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