BILD 3 Lecture Notes - Lecture 14: Flatworm, Cestoda, Scyphozoa
Document Summary
Are a symbiotic association of millions of photosynthetic microorganisms held in a mass of fungal hyphae. The fungal component of a lichen is most often an ascomycete. Algae of cyanobacteria occupy an inner layer below the lichen surface. About 30% of known fungal species are parasites, mostly on or in plants. Humans eat many fungi and use others to make cheeses, alcoholic beverages, and bread. Antibiotics produced by fungi treat bacterial infections. Haploid-dominated life cycles with potentially huge underground mass. Body plans: symmetry, tissue layers, body cavities, development patters. Protostome and deuterostrome: early diverging groups. The parts of a radial animal, such as the sea anemone (phylum cnidaria), radiate from the center. Any imaginary slice through the central axis divides the animal into mirror images: bilateral. A bilateral animal, such as a lobster (phylum arthropoda), has a left side and a right side. Only one imaginary cut divides the animal into mirror-image halves.
