"Reproduction and Development of Birds" Biological Reproduction and Development PPT Courseware 2

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"Reproduction and Development of Birds" Biological Reproduction and Development PPT Courseware 2

Apply what you learn

Xiaohong's grandma puts two hens in a cage. Do the hens lay eggs? Will the eggs hatch into chicks?

Can all the eggs you buy at home hatch chicks? Why?

no. Only fertilized eggs can hatch into chicks under the right conditions.

think about it

(1) The nutrients required for embryonic development mainly come from ( );

(2) What can provide both moisture and nutrition is ( ).

(3) The site of embryonic development is ( ),

(4) Fix the structure of yolk ( ),

(5) Some people say that "a bird egg is an egg cell, and the yolk is the nucleus." Is this correct?

This statement is incorrect. The egg cell of a bird includes the vitelline membrane, blastoderm, and yolk.

(6) If you soak eggs in glue, take them out and then hatch them, will you be able to hatch chicks?

cannot. Airtight, lack of oxygen for embryonic development.

(7) Which part of the egg will develop into a chick?

(8) The nutrients needed for embryonic development come from ( )

(9) The cell nucleus exists in ( )

(10) How to distinguish whether a bird egg is fertilized?

Test yourself

1. Eggs can hatch into cute chicks. Which part of the egg hatches chicks? blastoderm

2. Which part provides nutrients for embryonic development? Yolk and egg white

3. Which part provides air for embryonic development? Air chamber

4. Think about the function of the lace according to its position?

Suspended yolk, fixed and shock-absorbed, facilitates hatching

5. Some people say that a bird egg is an egg cell. Do you think that is correct? What structures should a real egg cell include in a bird egg?

wrong

Should include: blastoderm, yolk and vitelline membrane

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

"Reproduction and Development of Birds" Biological Reproduction and Development PPT Courseware 6:

"Bird Reproduction and Development" Biological Reproduction and Development PPT Courseware 6 What is the role of the structure of each part of the egg? Protein has a protective effect and can also provide nutrients and water needed for embryonic development. The blastoderm contains the nucleus, the site of embryonic development. The air chamber stores air..

"Reproduction and Development of Birds" Biological Reproduction and Development PPT Courseware 5:

"Bird Reproduction and Development" Biological Reproduction and Development PPT Courseware 5 Teaching Objectives 1. Name the structural characteristics of bird eggs that are suitable for development on land. 2. Describe the reproductive and developmental processes of birds. 3. Pay attention to the relationship between birds and human life by visiting or participating in poultry breeding activities.

"Reproduction and Development of Birds" Biological Reproduction and Development PPT Courseware 4:

"Reproduction and Development of Birds" Reproduction and Development of Biological Organisms PPT Courseware 4 1. Observe the structure of bird eggs, ask questions and communicate. You may have raised chickens, ducks or domestic pigeons, or you may have seen about the reproduction and development of birds on TV. situation. Regarding the reproduction and development of birds, you...

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Update Time: 2024-10-02

This template belongs to biology courseware People's Education Edition Biology for Grade 8, Volume 2 industry PPT template

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