Question

Explain the structure of a dicot seed ???????

Answer 1

 The seed is bulky, oval and slightly indented on one side. On this side, there is a short longitudinal, whitish ridge called the raphae. At one end of the raphae, there is a minute opening known as germ pore or micropyle. If a water-soaked seed is pressed gently, a small drop of water along with air bubbles will come out through the micropyle. The embryo is enclosed by the seed coat. It consists of cotyledons attached to the primary axis which has a rudimentary root portion called the radicle and a rudimentary stem portion called plumule. The tip of the radicle projects outside and is nearer to the micropyle. The plumule is placed between the two cotyledons and consists of shoot axis and a small bud having two tiny follded leaves.