Biology Lecture ch 33 Vocab

• symmetry in 5 or multiples of five
• changed from the bilateral symmetry larva

• a unique feature of the echinoderms
• a network of water-filled canals leading to extensions (tube feet)
• madreporite -> ring canal -> radial canal -> tube feet

extensions used for locomotion, gas exchange, and feeding

• most distinct chordates
• composed of a core of large cells with fluid filled vacuoles making it rigid and flexible

have jointed vertebral column

• in the dorsal cavity
• replaces the notochord during early development

the four legged vertebrates

• the adaptation of water bound animals to terrestrial animals
• must stay in moist environments to stay alive

the knowledge and traditions that are passed along from one generation to the next by teaching and observation