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The Structure of a seed |
In a flower, the ovule in the ovary is what becomes the seed. The outside of the ovule becomes the seed coat. Inside the ovule was the embryo sac. Once it has been fertilized, you now have a plant embryo or zygote (which will grow into the new plant), and the endosperm, which is a nutritive tissue that collects starch, protein, and fats to provide for the growth of the embryo.
When you have a Dormant Embryo, a Storage Tissue, and a Seed Coat, then you have a SEED. In the diagrams above, the dicot seed will have two seed leaves (or cotyledon). The seed leaves are the very first leaves it develops when it emerges above the ground. The Monocot seed, on the other hand, will have only one seed leaf or cotyledon.