Question

What is the difference between embryo and a seed in a plant

Answer 1

Differences Between An Embryo And A Seed. ...
  A seed plant embryo is part of a seed, consisting of precursor tissues for the leaves, stem , and root, as well as one or more cotyledons. Once the embryo begins to germinate — grow out from the seed — it is called a seedling.

A seed on the other side a seed is an embryonic plant enclosed in a protection outer covering known as the seed coat. It is the product of the ripened ovule which occurs after fertilization