Answer:
A Horizon "Topsoil"
Step-by-step explanation:
Seeds below the soil, so the delicate part of the embryo that is apical meristem part of an embryo is needed to be protected from the sharp particle sof soil during the time of seed germination. Plant roots are found in the topsoil as the topsoil has the highest concentration out of all the other layers of soil. It contains nutrients that plants need to grow; support processes such as photosynthesis.