Which statement is true about the ten phyla list?

Which statement is true about the ten phyla list?

• A. It includes Porifera and Chordata
• B. It includes only invertebrates
• C. It includes sea stars
• D. It includes mammals

Answer: (A)

The ten phyla list is a set of major animal groups used to show how diverse life can be at the level of body plans. Porifera (sponges) and Chordata (animals with a notochord at some stage, including us) are two distinct phyla that appear on that list, spanning from simple, mostly tissue-less forms to highly complex vertebrates. Seeing both on the same list demonstrates the breadth of the diversity being covered, which is why this statement is true.

The ten phyla list is a set of major animal groups used to show how diverse life can be at the level of body plans. Porifera (sponges) and Chordata (animals with a notochord at some stage, including us) are two distinct phyla that appear on that list, spanning from simple, mostly tissue-less forms to highly complex vertebrates. Seeing both on the same list demonstrates the breadth of the diversity being covered, which is why this statement is true.