Question

The plant embryo is formed by the structure

• A. A, B
• B. A, D
• C. B, C
• D. A, B, E
• E. B, C, D

Answer 1

The correct option is D A, B, E

The embryo lies to one side of the innermost corn seed and contains the parts of the miniature plant structure, or seedling, in the seed. This is the part of the seed that develops into a new plant if the seed is planted. The embryo can be distinguished from the other major parts of a seed based on component parts and function. It consists of the epicotyl, hypocotyl, radicle, and one or two cotyledons. The plumule (A), or part that develops into a shoot and produces the first true leaves of a new plant; the radicle (B) or future seedling root; and the coleoptile and colerohiza, or coatings that protect the new seedling are found in this part of the seed. Cotyledons (E) are specialized seed leaves which develop from the plumule and occur singly in most monocot seeds but two in dicot seeds. They are the most prominent part of a fully developed embryo. Most of the oil in a corn seed exists in the embryo.