A scion is
A. a clone of a plant created by tissue culture in a lab.
B. the root stock to which another plant part is grafted.
C. a triploid zygote that develops into endoderm.
D. a part of a plant that is grafted to root stock of a closely related plant.
E. a tetraploid zygote formed from the union of two diploid nuclei.
D. a part of a plant that is grafted to root stock of a closely related plant.
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