BIOL 2030 Lecture Notes - Lecture 10: Chiton, Monoplacophora, Veliger
Document Summary
Chitin: attached to rocks, where the ocean waves come crashing in on rocks is where you nd them. Burgess shale is a place in alberta or bc that basically is used by ocean biologists to. Whole group of extinct molluscs that have been identi ed there. Diet: herbivores, detritovores (scavengers), lter feeders & predatory carnivores. Habitat range: 7000m above sea level to abyssal depths. A typical mollusc is a hypothetical mollusc. De ning characteristics of the phylum: mantle: specialized tissue formed by dorsal epithelium. Secretes shell(s: radula: tongue-like organ with teeth used for feeding. Foot : ventral body wall muscles developed for locomotion or clinging. Simplest body plan consists of: foot or head-foot portion, visceral mass portion, shell. Dotted line that cuts through animal divides head and foot portion from visceral mass portion on top. Foot is what the hypothetical mollusc would use to walk around. Top of mass is where organs would be found.
