why do vertebrates tend to be more intelligent than invertebrates
Answers
The respiratory system of invertebrates is most likely a limiting factor in invertebrate brain size and complexity.
A vertebrate respiratory system relies on organs like lungs or gills for gas exchange in the blood stream, whereas invertebrates have simple respiratory systems. Insects generally tracheal systems that branch from openings in the surface called spiracles directly to their internal organs. Small aquatic crustaceans simply absorb oxygen across the body through diffusion, and larger crustaceans use simple gills that move oxygen directly into the circulatory system. These respiratory systems were much more efficient 300 million years ago when Arthropleura, the largest arthropod that ever lived (6 feet long) was alive - because the Earth’s atmosphere contained 31–35% more oxygen than it does today. Today’s atmosphere limits the size of invertebrates, particularly those with exoskeletons, to a size that their simpler respiratory system can support. When a vertebrate brain is deprived of oxygen, it can cause permanent brain damage. The same may have happened over millions of years to many larger invertebrates as our atmosphere shifted to lower oxygen conditions, with evolution eventually favoring simpler invertebrate brains requiring less oxygen.
Answer:
the respiratory system in the brain size of they the brain size of the integrates make their more important and