Yes. Crocodiles lay their eggs on land, in a hole or mound, depending on the species. The embryo develops inside a yolk-filled amnion with a hard, white calcium shell that softens as the crocodile matures and absorbs the calcium.
It depends on how old the embryo is. If the embryo is 1 day old then there are fewer than if the embryo is 5 days old.
amnion is important because this this protects the embryo.
the amnion is a fluid-filled sac that will protect the embryo from mechanical shock.
The correct answer is amnion.
Amnion is the membrane that covers the embryo. Chorion is the membrane that covers the amnion, the yolk sac, and the allantois. The space delimited by the chorion and the amnion is called amniotic cavity and it is filled with aminiotic fluid. The amniotic cavity has the functions of preventing desiccation of the embryo and of protecting it against mechanical shocks.
There is no such thing as an "ovarian sac". The amnion is a membrane building the "amniotic sac" that surrounds and protects an embryo.