Respuesta :
The group of animals that have anus first development but there is no cephalization should be considered as the Invertebrates.
What Are Invertebrates?
An invertebrate should be considered as an animal who is cold-blooded but it does not have a backbone. It could be lived on the land such as insects, spiders, worms, even in the water. So the group of animals that should be treated as the anus first development and there is radial symmetry however there is no cephalization is called Invertebrates
Learn more about animals here: https://brainly.com/question/24762945
