What are protostomes?
Q: What are protostomes?
A: Protostomes are a type of animal above the level of phylum and a subtaxon of the Bilateria, distinguished by their embryo.
Q: How are protostomes different from deuterostomes?
A: Protostomes and deuterostomes differ in the fate of their blastopore. In deuterostomes, it becomes the anus, while in protostomes it becomes the mouth.
Q: What is the classification of protostomes?
A: Protostomes are not part of the normal system of classification, but they can be divided into three major groups: Ecdysozoa, Platyzoa, and Lophotrochozoa.
Q: What are some examples of animals belonging to the Ecdysozoa group?
A: Arthropods and nematodes are examples of animals belonging to the Ecdysozoa group.
Q: What are some examples of animals belonging to the Platyzoa group?
A: Platyhelminthes and rotifers are examples of animals belonging to the Platyzoa group.
Q: What are some examples of animals belonging to the Lophotrochozoa group?
A: Molluscs and annelids are examples of animals belonging to the Lophotrochozoa group, along with a number of minor taxa like the Chaetognatha.
Q: What does DNA sequence analysis suggest about protostome animals?
A: DNA sequence analysis suggests that protostome animals can be divided into three major groups: Ecdysozoa, Platyzoa, and Lophotrochozoa.
