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12 Cards in this Set
- Front
- Back
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What does it mean to be an animal? What are common aspects of animal development?
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eukaryotic, multicellular, heterotrophic organisms that get nutrients by ingesting other organisms, able to digest food within the body. Most are diploid and reproduce sexually
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What is the body structure and feeding structure of a Sponge?
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Lack true body tissues, resembling a sac perforated with holes. Choanacyte cells draw water through the walls of the sponge where food is collected.
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What is the body structure and feeding strategy of Cnidarians?
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Characterized by radial symmetry and tentacles with stinging cells. Basic plan is a sac w/ gastrovascular activity, central digestive compartment w/ one opening. Body has 2 variations: stationary polyp and floating medusa. Tentacles are used to capture prey
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What is the body structure and feeding strategy of Molluscs?
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Soft-bodied animals, usually protected by a hard shell. Body has muscular foot,visceral mass w/ organs, and a mantle. Many feed by using a radula to scrape up food.
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What is the body structure and feeding strategy of of Flatworms?
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Gastrovascular cavity has extensive surface area for absorption of nutrients. Simplest bilateral animals. Parasitic and free living in marine, freshwater, or damp habitats.
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What is the general structure of Annelids?
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Have body segmentation. Body includes a coelom and complete digestive tract w/ 2 openings and one-way movement of food.
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What is the general structure of Nematodes/ Roundworms?
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Cylindrical and tapered on each end.
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What is the general structure of Arthropods?
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Segmented animals w/ specialized segments and appendages for an efficient division of labor among body regions.
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What are the advantages and disadvantages of an exoskeleton?
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protection and points of attachment that move appendages VS limited movement
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What are the 4 defining characteristics of the phylum Chordata?
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Dorsal, hollow nerve cord. Notochord. Pharyngeal slits. post-anal tail.
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What are several aquatic and terrestrial adaptations of amphibians?
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Lungs, fins w/ muscles, skeletal supports strong enough to enable some movement on land
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What are 3 adaptations for flight found in birds?
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Honeycombed bones, one instead of 2 ovaries, beak instead of teeth.
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