AP BIOLOGY

Detailed explanation-1: -The chordates are also characterized by a dorsal nerve cord, which splits into the brain and spinal cord. Chordata contains two clades of invertebrates: Urochordata (tunicates) and Cephalochordata (lancelets), both of which are suspension feeders.

Detailed explanation-2: -Kangaroos, Humans, Tuna, Bullfrogs, Snapping Turtles, Rhesus Monkeys, and Lampreys.

Detailed explanation-3: -The dorsal hollow nerve cord develops into the central nervous system: the brain and spine. Pharyngeal slits are openings in the pharynx that develop into gill arches in bony fish and into the jaw and inner ear in terrestrial animals.

Detailed explanation-4: -The notochord is replaced with a spinal cord in the case of humans who are vertebrate chordates. This difference is the main feature that separates invertebrate chordates from vertebrate chordates or animals with a backbone. A tunicate is a marine invertebrate animal. They are members of the tunicata subphylum.

Detailed explanation-5: -In vertebrates, the dorsal nerve cord is modified into the central nervous system, which comprises the brain and spinal cord.