Category (taxon) Domain ( a ) Human Eukarya Animalia Chordata ( b ) ( c ) ( d ) ( e ) Genus Species Mammalia Primates Hominidae Homo sapiens

Which of the following features does not distinguish humans as a member of phylum Chordata? Human embryos undergo indeterminate cleavage A spinal cord runs along an adult human’s dorsal side Human embryos exhibit pharyngeal arches and gill slits, The human coccyx forms from an embryonic tail.

Discuss Concepts Whentetrapods first ventured onto the land, what new selection pressures did they face? What characteristics might have fostered the success of these animals as they made the transition from aquatic to terrestrial habitats?

Explain some of the advantages brought about through the evolution of bilateral symmetry and coelom formation.