👉 In biology, an embryo is a developing organism that has not yet developed its complete body. It can be defined as a stage of development from which other cells are formed and continue to grow until they become fully-formed adults. Embryonic development refers to the process by which a cell begins to develop into a new organ or tissue in its own unique way, without the need for any external growth factors. This is an important milestone in the life cycle of a developing organism and is crucial for its survival