Bio 110 Week 11 Notes
Bio 110 Week 11 Notes BIOL 110 001
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This 0 page Class Notes was uploaded by Angelina Notetaker on Tuesday November 3, 2015. The Class Notes belongs to BIOL 110 001 at University of New Mexico taught by Thomas L. Kennedy in Summer 2015. Since its upload, it has received 17 views. For similar materials see Biology Non-Majors in Biology at University of New Mexico.
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Date Created: 11/03/15
Bio 110 Week 11 Notes Chapter 9 Invertebrate Diversity 0 An animal lacking a backbone such as an arthropod mollusk etc 0 Earth History 0 The Earth was 4 billion years when animals appeared I Questions 0 Why did it take 4 billion years for animals to evolve I The Proterozoic Eon Emergence of multicellular life 0 Earliest animals approximately 600 MYA I What does it take to go from single celled organisms to complex multicellular organisms The Cambrian Explosion 552 499 million years ago I What are the hypothesis explaining the rapid diversification of animal life in the Cambrian O Hypothesis 1 Rise in Oxygen 39 vl r FEI i a is v an Fil animals if 25 l E 39 l E El A a 7 7 H 7 C 7 T 7 gt T C 7 7 H 7 h T A 39 7 7 T T 7 T 7777 A 7 T g 7 7 gt 7 C 7 5quot ya 7 7 1DIII EIIIIIII 33933 39r iIIEI EDD 5433 IiIIIIII EILHII flIJIII O Hypothesis 2 Evolution of Hox genes I Any of a class of genes that determines the basic structure and orientation of an organism O Hypothesis 3 Rise of the predators 0 What were the ancestors of modern animals I Phanerozoic Eon 542 Million years ago to present I Choano agellate O A group of free living unicellular and colonial agellate eukaryotes considered to be the closet living relatives of animals Rapid diversification of animals beginning 550 million years ago 0 Unique animals from the Cambrian 540 MYA Modern animals groups evolve during the Cambrian 0 Representative animals of the first chordates and arthropods from 500 MYA 0 How does this early chordate evolve into modern mammals including humans I Devonian Animals evolved to live on land 0 First land animals were arthropods Centipede like ancestors 1 a 0 What are the defining features of animals I Unique characters of animals 0 Ectoderm nervous tissues skin 0 Mesoderm muscles bones 0 Endoderm lings digestive tract 0 Germ Layers Tissue layers 0 Symmetry 0 Radial symmetry symmetry around a central aXis as in a starfish of a tulip ower 0 Bilateral symmetry the property of being divisible into symmetrical halves on either side of a unique plane 0 Muscles 0 Nervous system 0 Heterotrophs that feed by ingestion 0 What is the modern diversity of animals I Modern invertebrate Diversity 0 About million species of animals I The Classification of Life 0 Domain 0 Kingdom 0 Phylum 0 Phylum Cnidaria Radial Symmetry I Cnidarians primitive animals with radial symmetry 0 Symbiont living inside a symbiont I Either of two organisms that live within one another 0 Class O Anthozoa Corals and anemones I Cnidarians Important for coral reefs and diversity I Threatened by climate change 0 Scyphozoan Jellyfish I They have been on Earth for possibly 700 million years I The longest animal on Earth is the Lions Mane Jelly I Cubozoa BOX Jellies 0 The box jellies or sea wasp are some of the most dangerous animals on the planet 0 Cubozoans have complex eyes Jellyfish populations have dramatically increased in recent decades 0 Cephalopods I Eyes are similar to vertebrates an animal of a large group distinguished by the possession of a backbone or spinal column including mammals birds reptiles amphibians and fishes 4 0 Order 0 Family 0 Genus 0 Species I Mollusks 0 Gastropods Snails O Threatened by climate change 0 Not all snails have shells I Example Elysia chlorotica photosynthetic 0 Bivalves 0 An aquatic mollusk that has a compressed body enclosed within a hinged shell such as oysters clams mussels and scallops To a First Approximation All Animals are Arthropods 0 Defining Characteristics of arthropods 0 Hard Exoskeleton O Jointed Limbs 0 Have compound eyes 0 Why can t arthropods grow to be very large 0 Giant Sea Scorpion about 400 million years old I About 25 meters long from head to tail 0 Japanese Spider Crab a I The Largest extant arthropod quot Subphylum Myriapoda Centipedes and Millipedes 0 Ancient Centipede 0 Arthropleura 8ft long I 300 Million Years Ago 0 Centipede Evolution Subphylum Chelicerata Spiders Scorpions Horseshoe crabs 0 Characteristics 0 Chelicerae I Either of a pair of appendages in front of the mouth in arachnids and some other arthropods usually modified as pincer like claws 0 Head and ThoraX Fused I The middle section of the body of an insect between the head and the abdomen bearing the legs and wings I Horseshoe Crabs 0 450 million years old 0 The eggs are an important food source for migrating shore birds 0 Their own community Arachnida Spiders Scorpions and Allies 0 Order 0 Scorpions I Wind Scorpion O Aranae Spiders i I Spinnerets V J 739 0 Any of a number of different organs through which the silk gossamer or thread of spiders silkworms and certain other insects is produced 0 In the production of man made fibers a cap or plate with a number of small holes through which a fiber forming solution is forced Arthropods Subphylum Crustacea 0 Class O Malacostraca Shrimp and Crabs O Lobster 0 Cirripedia Bamacles Subphylum Hexapoda Insect 0 Order Odonata Dragon ies and Damsel ies O Anisoptera Dragon ies I Tagmatization Abdome I They have a 90 rate of getting their Prey I Their legs are not made for walking but are more made to hunt prey O Zygoptera Damsel ies I A slender insect related to the dragon ies having weak ight and typically resting with the wings folded back along the body 0 Ephemeroptera May ies I Larvae are aquatic 0 Other insects with aquatic larvae and terrestrial adults 0 Stone y I A slender insect with transparent membranous wings the larvae of which live in clean running water 0 Caddis y I A small moth like insect with an aquatic larva that typically builds a protective portable case of sticks stones and other particles I Adult May y 0 Live a day 0 Mate and Dies O Orthoptera Grasshoppers Crickets Mantodea Mantis O Roaches I Very misunderstood O 0 Not all will live after an atomic bomb like we were lead to believe I They do not pass on germs to humans instead it is humans that pass germs to them 0 Hemiptera true bugs I Assassin bug I Cicadas 0 They can live underground for a long time compare to other bugs I Fulgoridea I Leafhoppers I Aphids Lepidoptera Butter ies and Moths Coleoptera Beetles O Diptera ies I Including mosquitoes OO 0 The most dangerous animal on the planet 0 Hymenoptera Parasitoids I Ovipositor Egg laying I Social Organisms Cretaceous 144 65 MYA First owering plants 115 MYA 0 Major milestone in evolution of diversity Echinoderms derms means skin 0 Class O Asteroidea Sea Stars I Primitive Eyes 0 Echinoidea Sand Dollars and Sea Urchins O Holothuroidea Sea Cucumbers O Crinoidea Sea Lilies 39 Modern Crinoid I Crinoid Fossils End of Week 11 notes 0 Important There will be a test next Friday 1 1 13 0 Also Week 12 Notes will hopefully be upload by this Friday or Saturday at the latest Thank you for using Studysoup