Chapter 19.1, Problem 3LO

Summary Introduction

To write:

The characteristics that distinguishes protostomes from deuterostomes.

Given:

The protostomes and deuterostomes are different based on the process of cell division for the formation of the embryo.

Introduction:

The protostomes are the lower invertebrate animals, in which the mouth appears before the anus during development. The cleavage is spiral and the coelom developed by the splitting of mesoderm. The deuterostomes have developed anus before mouthy during development. They grow by outgrowths from the gut.