A Scientist Is Studying Some Developing Eggs from an Ocean

Multiple Choice

A scientist is studying some developing eggs from an ocean sample.The early embryos have divided only a few times,and all cells look identical.When the scientist carefully removes half the cells from an embryo,both clumps of cells are able to complete development,forming twins.The eggs can be identified as

A) deuterostomes.
B) protostomes.
C) crustaceans.
D) cnidarians.
E) echinoderms.