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| 2713030960 | What are Annelids bodies composed of? | Annelids are coelomates with bodies composed of a series of fused rings | 0 | |
| 2713040465 | What were the 3 clades Annelids was traditionally divided into? | The Phylum Annelida was traditionally divided into three clades Polychaeta (polychaetes) Oligochaeta (oligochaetes) Hirundinea (leeches) | 1 | |
| 2713045969 | What are the two major clades annelids can be divided into? | Recent molecular analyses indicate that the annelids can be divided into two major clades Errantia Sedetaria | 2 | |
| 2713088750 | Clade Errantians | Most members of clade Errantia are mobile, marine organisms | 3 | |
| 2713104549 | What is Parapodia? | Many errantians have a pair of paddle-like or ridge-like structures called parapodia ("beside feet") on each body segment | 4 | |
| 2713135642 | What are pappodium's bristles made of? | Each parapodium has nuemerous chaetae, bristles made of chitin | 5 | |
| 2713146402 | Sedentarians | Sedentarians tend to be less mobile than errantians Some species burroww inot the substrate, while others live in protective tubes This clade also contains the leeches and the earthworms | 6 | |
| 2713147981 | How do tube-dwelling Sedentarians feed? | Tube-dwelling sedentarians often have elaborate gills or tentacles used for filter feeding | 7 | |
| 2713153028 | Habitat of Leeches | Most species of leeches live in fresh water; some are marine or terrestial | 8 | |
| 2713157398 | Predators of leeches includes | Leeches include predators of invertebrates, and parasites that suck blood | 9 | |
| 2713161130 | What chemical does leeches secrete? | Leeches secrete a chemical called hirudin to prevent blood from coagulating | 10 | |
| 2713165136 | How do earthworms eat? | Earthworms eat through soil, extracting nutrients as the soil moves through the alimentary canal | 11 | |
| 2713175009 | How do earthworms reproduce | Earthworms are hermaphrodites but cross-fertilize Some reproduce asexually by fragmentation | 12 | |
| 2717231058 | Fig 33.25 |  | 13 | |
| 2713188094 | Ecdysozoans | they are the most species-rich animal group | 14 | |
| 2713188372 | What is cuticle | Ecdysozoans are covered by a tough coat called a cuticle | 15 | |
| 2713190628 | What is ecdysis | cuticle is shed or molted through a process called ecdysis | 16 | |
| 2713287569 | What are the two largest phyla of Ecdysozoans? | Phyla Nematodes and Phyla Arthropods | 17 | |
| 2713302156 | Nematodes | Nematodes, or roundworms | 18 | |
| 2713290359 | Where are Nematodes found? | They are found in most aquatic habitats, in the soil, in moist tissues of plants, and in body fluids and tissues of animals | 19 | |
| 2713319864 | What is the model organism in research? | Caenorhabditis elegans is a model organism in research | 20 | |
| 2713321115 | How can human acquire Trichinella spiralis? | Trichinella spiralis can be aquired by humans from undercooked pork | 21 | |
| 2713522590 | _____ out of every three known species of animals are arthropods | two | 22 | |
| 2713523333 | What does arthropod body plan consists of? | The arthropod body plan consists of a segmented body, hard exoskeleton, and jointed appendages | 23 | |
| 2713527496 | General Characteristics of Arthropods | the appendages of some living arthropods are modified for functions such as walking, feeding, sensory reception, reproduction, and defense these modified appendages are jointed and come in pairs | 24 | |
| 2717232865 | Fig 33.30 |  | 25 | |
| 2713530861 | Arthropods body is completely covered by what? | the body of an arthropod is completely covered by the cuticle, an exoskeleton made of layers of protein and the polysaccharide chitin | 26 | |
| 2713532702 | How do arthropods grow? | By molting its exoskeleton | 27 | |
| 2713533490 | Arthropods unique eyes and antennae | arthropods have eyes, olfactory receptors, and antennae that function in touch and smell | 28 | |
| 2713539069 | What kind of circulatory system does arthropods have? | an open circulatory system in which hemolymph is circulated into the spaces surrounding the tissues and organs | 29 | |
| 2713544185 | What are the three major lineages that diverged early in the phylum's evolution | Chelicerates (sea spiders, horseshoe crabs, scorpions, ticks, mites, and spiders) Myriapods (centipedes and millipedes) Pancrustaceans (lobsters and other crustaceans, as wellas insects and their relatives) | 30 | |
| 2713586333 | What are Chelicerates are named for? | Chelicerates, clade Chelicerata, are named for clawlike feeding appendages called chelicerae | 31 | |
| 2713586917 | What are the two parts of Chelicerates? | They have an anterior cephalothorax and a posterior abdomen | 32 | |
| 2713588699 | What were the earliest chelicerates? | The earliest chelicerates were eurypterids (water scorpions) | 33 | |
| 2713591625 | Chelicerates | Most marine chelicerates (including eurypterids) are extinct, but some species survive today, including horseshoe crabs | 34 | |
| 2713598180 | What does modern Chelicerates called? | Most modern chelicerates are arachnids, which include spiders, scorpions, ticks, and mites | 35 |
