Embryo Definition

An embryo refers to the early developmental stage in the life cycle of a multicellular organism, specifically in animals and plants. It is characterized by the development of the structure and organs that will eventually form the mature individual.

Animal Embryo

In animals, an embryo is the developing organism from the moment of fertilization until the end of the embryonic stage. During this stage, cells divide and differentiate, leading to the formation of tissues, organs, and body systems.

Plant Embryo

A plant embryo, also known as a seed embryo, is the structure that develops from the fertilized ovule. It consists of the embryonic root (radicle), embryonic shoot (plumule), and one or two cotyledons, which will eventually give rise to the root system, shoot system, and the first leaves of the plant.

Human Embryo

In human development, an embryo is the stage from conception until approximately 8 weeks of gestation. During this stage, the zygote undergoes cell division and differentiation, forming the basis for the development of various tissues, organs, and body systems.

Embryology

Embryology is the branch of biology that studies the formation and development of embryos across different organisms. It explores the intricate processes involved in embryogenesis, including cell division, differentiation, morphogenesis, and organogenesis.