"Reproduction and Development of Birds" PPT courseware

Description

"Reproduction and Development of Birds" PPT courseware

Part One: Introduction of New Course

The poet Bai Juyi mentioned in "Spring Journey to Qiantang Lake" that "where several early orioles compete for warmth in the trees, whose new swallows peck at the spring mud." What reproductive behaviors of birds did he describe? What are the implications? Please share your views.

learning target

1. Understand the reproductive behavior of birds;

2. Describe the reproductive and developmental processes of birds;

3. Give examples of common early birds and finishers.

Bird Reproduction and Development PPT, Part 2: Bird Reproductive Behavior

1. Build a nest

2. Courtship

3. Mating

4. Lay eggs

5.Hatch eggs

6.Brooding

Bird reproduction and development

Some people say that the egg shell is the cell wall, the egg shell membrane is the cell membrane, the yolk is the cell nucleus, and an egg is a cell. Is that true? Why?

Bird Reproduction and Development PPT, Part 3: Think About It

1. Can all eggs hatch into chicks?

cannot. Only fertilized eggs can hatch into chicks. In addition, if the fertilized eggs are stored in inappropriate conditions or damaged in some way, they will not hatch into chicks.

2. What are the characteristics of reproductive development of birds?

oviparous

internal fertilization

in vitro development

The way fertilization occurs inside the body, like in birds, is called internal fertilization

Bird Reproduction and Development PPT, Part 4: Feedback in class

1. The part of a bird egg that can hatch into a chick in the future is ( )

A. Yolk B. Egg white

C. blastoderm D. yolk frenula

2. The development of fertilized eggs in domestic pigeons begins in ( )

A. Inside the female pigeon B. After the pigeon eggs are laid

C. During incubation D. After incubation for a period of time

3. Among bird eggs, what can provide both water and nutrients for embryonic development ( )

A. Yolk B. Egg white C. Blastoderm D. Air cell

4. The reason why the embryo stops developing after the chicken's fertilized egg is born from the mother's body is ( )

A.Lack of nutrition B.Reduced temperature

C. Increased temperature D. Embryo damage

Keywords: Jiangsu Education Edition eighth grade biology PPT courseware for the second volume free download, bird reproduction and development PPT download, .PPT format;

For more information about the "Reproduction and Development of Birds" PPT courseware, please click the "Reproduction and Development of Birds" ppt tab.

"Reproduction and Development of Birds" PPT:

"Reproduction and Development of Birds" PPT Part One Content: Objectives of this section: 1. Describe the reproduction and development process of birds 2. List the common steps for observing eggs for early and late birds 1. Place the eggs The blunt end knocks out cracks. 2. Use tweezers to remove the egg shell..

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Update Time: 2024-07-01

This template belongs to biology courseware Jiangsu Education Edition 8th Grade Biology Volume 2 industry PPT template

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