Biology module 11 test
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| invertebrates | animals that lack a back bone
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| vertebrates | animals that posses a backbone
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| nematocysts | small capsules that contain a toxin which is injected into prey or predators
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| posterior end | the end of an animal that contains its tail
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| hermaphrodite | possessing both the male and the female reproductive organs
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| mantle | a sheath of tissue that encloses the vital organs of a mollusk, makes the mollusk's shell, and performs respiration
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| which phylum of animals discussed in this module has nematocysts? | the organisms of phylum Cnidaria
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| what do sponges eat and how do they get their food? | sponges eat algae, bacteria, and organic material that is in the water. they get their food by pumping water through their body and capturing the food from the water
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| two members of phylum Platyhelminthes are studied. the first has a complex nervous system and the second does not. which one is most likely the parasitic planarian? | the second planarian
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| an earthworm's seminal vesicles are full. has it mated yet? | it has Not mated
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| what is the difference between a hard, prickly sponge and a soft sponge? | hard, prickly sponges contain spicules while soft sponges contain spongin
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| what function does the cuticle perform in an earthworm? | the cuticle allows the earthworm to get oxygen and release carbon dioxide
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| what is the common mode of asexual reproduction among the organisms of phylum Platyhelminthes? | they're reproduced by regeneration
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| what is the common mode of asexual reproduction among the organisms of phylum Cnidaria? | members of phylum Cnidaria asexually is reproduced by budding
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| place each of following organisms into its proper phylum: a.sponge b.Snail c.Jellyfish d.Segmented sea worm e.Flatwom | a.porifera b.mollusca c.cnidaria d.annelida e.platyhelminthes
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| is a clam with two shells univalve or bivalve mollusks? | bivalve because they have two shells
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