the embryonic stem in a seed is the plumule.
it grows out of the hypocotyl, which that itself grows out of the radical, which is attached to the microphyl, feeds on the cotyledon, is fertilized by the endosperm, and is all protected by a hard seed coat :)
The correct answer to the question is the radicle, which is the embryonic root that emerges from the seed during germination. The radicle develops into the primary root system of the plant. Other options like hypocotyl, seed coat, and endosperm refer to different parts of the seed or its function.
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