Traditional Culture Encyclopedia - Traditional stories - Winter vacation homework, a biology student in 8th grade, asked God for an answer.
Winter vacation homework, a biology student in 8th grade, asked God for an answer.
Structure and name of each part:
First of all, eggshells
Second, the shell membrane
Third, protein.
Four. yolk
Verb (abbreviation for verb) blastoderm
A white spot on the surface of egg yolk, the unfertilized one is called ovule, and the fertilized one is called blastoderm.
If junior high school students don't need to master other structures, they can draw a sketch on their homework and only mark the above five structures.
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