Question

multiple choice question
during embryonic development in angiosperms, what structures form at opposite ends of the embryo after the cotyledons begin to form and bend?
o seed leaves
o vascular and cork cambium
o root and shoot apical meristems
o true leaves

Explanation:

During embryonic development in angiosperms, the root and shoot apical meristems form at opposite ends of the embryo after the cotyledons begin to form and bend. The root apical meristem will give rise to the root system, and the shoot apical meristem will give rise to the shoot system (including stems, leaves, etc.). True leaves develop later as the plant grows. Vascular and cork cambium are secondary meristems that appear during secondary growth (in woody plants). Seed leaves are cotyledons which are part of the embryo but not the structures at opposite ends in terms of meristematic regions at this early stage of embryonic development as described in the question.

Answer:

root and shoot apical meristems