BIOL 202 Lecture Notes - Lecture 8: Opisthosoma, Cestoda, Arthropod Cuticle
29 Jan 2017
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Currently: 4 subphyla phyla, 16 class, ~1mspecies: most specious phyla on earth. Specialized segments are called tagma: tophat: what other inverterate phyla show segmenation, what other invertebrate phyla show metamerism, platyhelminthes and annelids. Leeches and earthworms (also correct: polychaeta and clitellata [c] Distinguishing the subphyla: where the segmentation occurs is what differs ***you are expected to know the different terms on the chart about, ex. Chitinous exoskeleton: advantage: dealing w water moisture, dis: its flexible but it cant accommodate growth in the animal so it does have to molt, prtenatious fibers running both ways. It is a bioproduct of the chitinous exoskeleton: cuticle, epidermis cell ; it cell dives and the indigestion and the reclamation of the endocuticle. Will go through some form of metamorphosis. Life cycle: everything insdie the animal movies around, whe(cid:374) you u(cid:374)dergo (cid:373)ert e(cid:272)ologi(cid:272)al consequences because each part of the life cycle, egg l, larvae.
