Question

The amniota is a group that includes egg laying animals as well as those that nourish developing young internally with a placenta. Which of the following correctly compares the amniotic egg with the placenta?

 1) the organism developing in an amniotic egg is surrounded by an amnion, while one developing with a placenta is not

 2) the yolk sаc of the amniotic egg is much larger than the yolk sac of the animal developing with a placenta

 3) only placental animals can survive in dry environments, those developing inside amniotic eggs cannot.

 4) the animal developing with a placenta can do gas exchange, while an animal in an amniotic egg cannot

 5) the embryo in an amniotic egg is always only haploid, while the embryo developing with a placenta is always diploid.

Answer 1

The York sac of amniotic egg is much larger than the York sac of animals developing with a placenta.