Which of the following is characteristic of protostomes?

Which of the following is a characteristic of cnidarians?

In the embryo of a shark, ectoderm gives rise to __________; mesoderm gives rise to __________; endoderm gives rise to __________.

Which of the following is the defining characteristic of the clade Ecdysozoa for which this group is named?

Unlike other animals, sponges __________.

All animals with bilateral symmetry have __________ germ layer(s).

A true coelom is __________.

One of the primary developmental/anatomical characteristics distinguishing the major animal phyla is the condition of the body cavity. A pseudocoelomate animal is one in which the body cavity is __________.

The presence of a coelom is advantageous because __________.