embryonic development lab - truaxbiology.com · magnification for the following: zygote, 2-cell,...
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![Page 1: Embryonic Development Lab - TruaxBiology.Com · magnification for the following: zygote, 2-cell, 4-cell, morula, blastula, and gastrula stages. Label the ectoderm, endoderm, and mesoderm](https://reader033.vdocuments.mx/reader033/viewer/2022041601/5e30ccfba9ed6710944d0785/html5/thumbnails/1.jpg)
Embryonic Development
Lab
Miss School, Miss Out!
Honors Human Biology 5-6
Lab 40
![Page 2: Embryonic Development Lab - TruaxBiology.Com · magnification for the following: zygote, 2-cell, 4-cell, morula, blastula, and gastrula stages. Label the ectoderm, endoderm, and mesoderm](https://reader033.vdocuments.mx/reader033/viewer/2022041601/5e30ccfba9ed6710944d0785/html5/thumbnails/2.jpg)
Question: How do the various stages of animal development compare to one another?
Hypothesis: None for this lab.
Procedure: View prepared slides of starfish, pig, and chicken embryos.
Observations: Take pictures, measure, and record the magnification for the following: zygote, 2-cell, 4-cell, morula, blastula, and gastrula stages. Label the ectoderm, endoderm, and mesoderm on the gastrula. Take pictures of the 48-hour chicken and the 10mm pig embryos making 5 observations and note two similarities for each.
Analysis: At what stage does the embryo implant? List the fate of the ectoderm, endoderm, and mesoderm.
Statement of Significance:
Embryonic Development Lab
![Page 3: Embryonic Development Lab - TruaxBiology.Com · magnification for the following: zygote, 2-cell, 4-cell, morula, blastula, and gastrula stages. Label the ectoderm, endoderm, and mesoderm](https://reader033.vdocuments.mx/reader033/viewer/2022041601/5e30ccfba9ed6710944d0785/html5/thumbnails/3.jpg)
40x = 25 μm 100x = 10 μm 400x = 2.5 μm 1000x = 1.0 μm
Stage Magnification Size
zygote
2 cell
4 cell
morula
blastula
gastrula
![Page 4: Embryonic Development Lab - TruaxBiology.Com · magnification for the following: zygote, 2-cell, 4-cell, morula, blastula, and gastrula stages. Label the ectoderm, endoderm, and mesoderm](https://reader033.vdocuments.mx/reader033/viewer/2022041601/5e30ccfba9ed6710944d0785/html5/thumbnails/4.jpg)
Lab 40 Label Requirements
Star Fish Embryos
1. 2-cell stage
2. 4-cell stage
3. blastomere
4. blastula
5. gastrula
6. morula
7. zygote
Blastula
1. blastocoel
Gastrula
1. archenteron
2. blastopore
3. ectoderm
4. endoderm
5. mesoderm
10mm Pig Embryo/48 hour Chicken Embryo
1. heart
2. somites
![Page 5: Embryonic Development Lab - TruaxBiology.Com · magnification for the following: zygote, 2-cell, 4-cell, morula, blastula, and gastrula stages. Label the ectoderm, endoderm, and mesoderm](https://reader033.vdocuments.mx/reader033/viewer/2022041601/5e30ccfba9ed6710944d0785/html5/thumbnails/5.jpg)
Star Fish Embryos
1. 2-cell stage
2. 4-cell stage
3. blastomere
4. morula
5. zygote
![Page 6: Embryonic Development Lab - TruaxBiology.Com · magnification for the following: zygote, 2-cell, 4-cell, morula, blastula, and gastrula stages. Label the ectoderm, endoderm, and mesoderm](https://reader033.vdocuments.mx/reader033/viewer/2022041601/5e30ccfba9ed6710944d0785/html5/thumbnails/6.jpg)
Star Fish Embryos
1. blastula
2. gastrula
Blastula
1. blastocoel
Gastrula
1. archenteron
2. blastopore
3. ectoderm
4. endoderm
5. mesoderm
![Page 7: Embryonic Development Lab - TruaxBiology.Com · magnification for the following: zygote, 2-cell, 4-cell, morula, blastula, and gastrula stages. Label the ectoderm, endoderm, and mesoderm](https://reader033.vdocuments.mx/reader033/viewer/2022041601/5e30ccfba9ed6710944d0785/html5/thumbnails/7.jpg)
10mm Pig Embryo/48 hour Chicken Embryo
1. heart
2. somites
![Page 8: Embryonic Development Lab - TruaxBiology.Com · magnification for the following: zygote, 2-cell, 4-cell, morula, blastula, and gastrula stages. Label the ectoderm, endoderm, and mesoderm](https://reader033.vdocuments.mx/reader033/viewer/2022041601/5e30ccfba9ed6710944d0785/html5/thumbnails/8.jpg)
10mm Pig Embryo/48 hour Chicken Embryo
1. heart
2. somites
![Page 9: Embryonic Development Lab - TruaxBiology.Com · magnification for the following: zygote, 2-cell, 4-cell, morula, blastula, and gastrula stages. Label the ectoderm, endoderm, and mesoderm](https://reader033.vdocuments.mx/reader033/viewer/2022041601/5e30ccfba9ed6710944d0785/html5/thumbnails/9.jpg)
END
Miss School, Miss Out!