BILD 3 Lecture Notes - Lecture 15: Optic Nerve, Tardigrade, Ecdysozoa
Document Summary
Ecdysozoa: ecdysozoa: clade also mostly identified by molecular homologies, 8 phyla including tardigrada, ecdysozoans undergo molting of a tough external cuticle. Deuterostomia: deuterostomia : clade defined primarily by molecular homologies, echinoderms : ~7,000 spp. : sea stars, brittle stars, sea cucumbers, urchins: they have bilaterally symmetrical larvae, a five-part adult body plan, and a water sand dollars, and sea lilies. vascular system, and are marine. Phylogeny of living chordates: chordates = all animals with a notochord, the notochord becomes the backbone, provides a structure for rigid attachment, but is flexible to allow for. The physical environment & the biosphere movement: overview of ecological concepts, seasonality and latitudinal variation in climate, air circulation patterns, ocean currents, regional effects on climate, biomes, mediterranean-type ecosystems. What is ecology: we approach the study of ecology from three perspectives, descriptive, functional, evolutionary, all three approaches are necessary to produce good ecological science that will help us to understand nature.
