In humans, the prefetal product of conception from implantation through the eighth week of development.
Until the 9th week.
Hyaline cartilage is the forerunner of long bones in the embryo.
Hyaline cartilage is the forerunner of long bones in the embryo.
Hyaline cartilage is the forerunner of long bones in the embryo.
It cannot. An embryo is completely reliant on its mother for life.
The development of a fertilized egg starts out as an embryo though after 8 weeks it is legally considered a fetus.
8 weeks
14 Days. Then it turns in to a fetus.
59 hours
62 days
The plant embryo can suvive inside the ssed because it derives its food from the endosperm and cotyledon.
It takes about one day.
because it helps in the development of an embryo, letting us know if it is fully developed or not. It's the time needed for it to do so. When it hasn't been long enough then it is considered premature.