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Ch 33 - Invertebrates (PART 2 of 2)(1 slide per page)-1

G ants grasshoppers beetles eg butterflies piercing

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Unformatted text preview: Bees, ants, wasps (Hymonoptera) (~10%) • Stink bugs, bed bugs, etc (Hemiptera) (~8%) • Grasshoppers, crickets, etc. (Orthoptera) (~1%) 119 Beetles are largest subclass (~30% of all animals) 120 4 General Mouth part Types Allow for a variety of types of feeding strategies Sucking Chewing e.g. ants, grasshoppers, beetles, e.g. butterflies Piercing/ sucking e.g. aphids, mosquitoes Absorbent e.g. Flies 121 Deuterostomes Cleavage Coelom Formation Fate of Blastopore • Traditionally separated from other Bilateria based on development • But a couple clades outside of the Deuterostomes (e.g. ectoprocta, Brachiopoda) develop similarly to these. • Thus, Deuterostome monphyly based primarily on DNA similarities Figures 32.10 and 32.11 (Campbell et al.) 122 Phylum: Echinodermata Sea urchins, sand dollars, sea stars, brittle stars, sea cucumbers and crinoids Abundant molecular data places echinoderms as the sister taxon to Chordates Figures 32.10 and 32.11 (Campbell et al.) 123 Phylum Echinodermata spiny skin Defining features: •Marine •Slow, mobile, bottom dwellers •Not cephalized •Endoskeleton of CaCO3 plates •Water vascular system (tube feet) •Unisexual w/ external fertilization 124 Phylum Echinodermata Most of the adults have radial symmetry (or close to)… So why in Bilateria? LARVAE have bilateral symmetry 125 Skeletal support system • CaCO3 plates (ossicles) under a layer of epidermis (i.e. e...
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