As a seed plant germinate, the new plant is called an embryo, seedling, steem or an egg after the leaves first open

As a seed plant germinate, the new plant is called an seedling after the leaves first open , seedling can be defined as a young plant developing out of a plant embryo from a seed. Seedling development starts with germination of the seed.

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you need to have a picture of the atom that way we can answer it