BIOL 225 Study Guide - Quiz Guide: Brown Recluse Spider, Symmetry In Biology, Trilobite
28 Dec 2019
School
Department
Course
Professor
Document Summary
Great sensory system- so they can be aware of their surroundings. Chiton-like but have different characteristics from chitons and chitons are not extinct. Chiton polyplacophora, different phylums but they look similar, not extinct. Silk make webs, egg sacs, drag lines. Silk is biocompatible, isn"t rejected by the human body. Repro: male transport sperm packet via pedipalps (sexual dimorphism) Neurotoxic causes mass release of ach. 2 major body parts: cephalothorax & abdomen. Scratch (chigger gone, tube remains; they don"t burrow in skin) The tiny larva (0. 25 mm) is the chigger"s only biting life stage. the adult is a predator on other soil-dwelling arthropods. Borrelia burgdorferi, the spirochetal bacteria that cause lyme disease. Larval stage - eat, overwinter, molt to nymph. Lone star tick: (adult female with white spot) Saliva that sneaks into the tiny wound may trigger an allergic reaction to meat -- agonizing enough to convert lifelong carnivores into wary vegetarians.
