AP BIOLOGY

Detailed explanation-1: -A newly developing human is typically referred to as an embryo until the ninth week after conception, when it is then referred to as a fetus. In other multicellular organisms, the word “embryo” can be used more broadly to any early developmental or life cycle stage prior to birth or hatching.

Detailed explanation-2: -embryo, the early developmental stage of an animal while it is in the egg or within the uterus of the mother. In humans the term is applied to the unborn child until the end of the seventh week following conception; from the eighth week the unborn child is called a fetus.

Detailed explanation-3: -The somatic cell is something from which a new organism can be generated; it is certainly not, however, a distinct organism. A human embryo, by contrast, is already a distinct, self-developing and complete human organism.

Detailed explanation-4: -Definition. (botany) A young, developing plant, such as the rudimentary plant inside the seed of higher plants or that inside the archegonium of mosses and ferns. Supplement. Word origin: Ancient Greek embruon from en-, in– + bruō (grow, swell)

Detailed explanation-5: -undifferentiated sporophyte is called an embryo.