2. Identify the diagram and define it. 13. What are pollen grains ? 4. What is an embryo?

asked Jun 12, 2021 131k views

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2. Identify the diagram and define it.
13. What are pollen grains ?
4. What is an embryo?

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Phôi thai là giai đoạn sơ khai nhưng rất quan trọng để hình thành đầy đủ cấu tạo của thai nhi.

Nandu answered Jun 18, 2021

by Nandu

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