The Hard Substratum Invertebrates of the Atlantic

Question

The hard substratum invertebrates of the Atlantic
A) Are more diverse than in the Pacific
B) Derived from a massive migration from the Pacific
C) Belong to few phyla than in other oceans
D) Arose in the Atlantic in the Cambrian Period

Accepted Answer

The diversity of hard substratum invertebrates in the Atlantic Ocean is significantly influenced by a massive migration from the Pacific Ocean. This migration has contributed to the current biodiversity seen in the Atlantic, as species moved through various pathways, such as around the southern tip of South America or through the Central American Seaway before it closed.