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Stack #1882270
| Question | Answer |
|---|---|
| The embryo doesn't grow larger during the stage known as cleavage. What is going on in the embryo during this process? | The cells are dividing at this stage, but all the cytoplasm is being split between resulting cells without the formation of new cytoplasm. |
| Which of the following combinations of embryonic features is common in the protostomes? | Spiral cleavage, and the gastulation pore (gastropore) becomes the mouth. |
| Animals that molt belong to the? | Ecdyzoans |
| Animals that produce a troposphere larvae, larvae with a ring of cilia around middle for swimming and suspension feeding, are within which subgroup of protostomes? | Lophotrochozoans |
| The presence of a coelom is advantageous because ? | It is a structure against which muscles can push |
| Soon after the coelom begins to form, a researcher injects a dye into the coelom of a deuterostome embryo. initially, the dye should be able to flow directly into the? | Archenteron |
| The blastopore denotes the presence of an endoderm-lined cavity in the developing embryo, a cavity that is known as the. | Archenteron |
| First phylum of animals at the tissue level of organization, with complex tissues muscles and nerve. | Cnideria |
| Phylum at the multicellular level of organization, with simple epithelial tissue only, no complex tissue but with division of labor | Porifera |
| Radially symmetric | Cnideria |
| Bi radial symmetry, with eight cilia ted plates | Ctenohora |
| Metagenesis-life cycle altenate between a sexual and an asexual repoductive form. | Cnideria |
| Asymmetric | porifera |
| Dioescious | Cnideria |
| Simplest animals to use cilia for movement, cilia arranged in eight rows | Ctenophora |
| Grantia, sycon (Temperature, freshwater sponge ) | Porifera |
| Physalia physalia, Portuguese man of war | Cnideria |
| Comb jellies | Ctenophora |
| Box jellyfish | Cnideria |
| Coral | Cnideria |
| Cniderians are divided into their classes primarily on the basis | Composition of their spicules |
| Which of the following is a flagellated cell that sweeps water through a sponge's body? | Choanocyte |
| A sponge's structural materials (spicules, spongin) are manufactured by the | Amoebocytes |
| The members of which clade in the phylum Cnidaria occur only polyps? | Anthozoa |
| In terms of food capture, which sponge cell is most similar to the cnidocyte of a cnidarian? | Choanocyte |
| Which of the following is true of members of the phylum Cnidaria | They may use a gastrovascular cavity as a hydrostatic skeleton. |
| Digestive system is complete | Nematoda |
| Acoelomate | Platyhelminthes |
| Pseudocoelomate | Nematoda |
| First phyla of animals with cephalization | Platyhelminthes |
| Dorsoventrally flattened | Platyhelminthes |
| Cyclindric | Nematoda |
| Schistasoma mansoni (blood fluke) | Platyhelminthes |
| Opisthorchis sinensis (human liver fluke) | Platyhelminthes |
| Taenia Saginata (human bee tape worm) | Platyhelminthes |
| Dugesia tigrina, planaria | Platyhelminthes |
| Necator americanus_(American Hookworm) | Nematoda |
| Dracuncula medinesis,_Guinea worm | Nematoda |
| Ascaris lumbricoides | Nematoda |
| The roundworm Wucheria bancroftii causes | Elephantiasis |
| Ancyclostoma caninum, the dog hookworm can cause | Anemia |
| Upon close inspection of the movement in nematodes, tou would notice. Nematodes wriggle back and fourth. What anatomical feature explains their movement? | Nematode have only longitudinal muscle |
| Ascaris lumbricoides are contracted by | drinking water or eating food contaminated with their eggs |
| Schistosoma mansonii (blood flukes) are contracted | wading in flooded rice fields |
| The feamle Dracuncula mediensis produces a toxin which causes | lesions on the skin |
| Metamericaly segemented | Annelida |
| With a mantle which secretes a shell of 1,2, or 8 parts (shell vestigial, internal or absent in some) | Mollusca |
| Open cirulatory system in all or most | Mollusca |
| With circular and longitudinal muscles, in each segment, working in opposition to create a cooridinated movement | Annelida |
| Second largest phylum in the animal kingdom | Mollusca |
| Ventral muscular foot variously modified for crawling, burrowing, or swiiming | Mollusca |
| With a radula, except in bialves | Mollusca |
| Earthworm | Annelida |
| Leech | Mollusca |
| Lightning whelk | Mollusca |
| Clamworm | Annelida |
| Chiton | Mollusca |
| Squid | Mollusca |
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gomerod0556