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bio vocab
chapter 14 vocabulary
| Question | Answer |
|---|---|
| bilateral symmetry | a body having two corresponding or complementary halves pg 364 |
| anterior | situated toward the front having a head end, pg 364 |
| posterior | situated toward the rear, or coming lst, the tail end in most animals. pg 364 |
| dorsal | in amimals situated toward the top or back side pg. 364 |
| ventral | in animals situated toward the lower or belly side. pg 364 |
| sessile | not free to move about in the enviroment, sessile animals usually are attached by the base to an object in the enviroment. pg 364 |
| radial symmetry | correspondence in size, shape, and position of parts as though they all radiated equally from a center point, or from a center line or axis. pg 364 |
| aquatic | describing a water environment or organisms that live in water. pg, 364 |
| terrestrial | living on land pg. 365 |
| appendages | a structure attached to the main part of a body, in animals, a tentacle, a leg a flipper, a wing pg 365 |
| porifera | the phylum containing sponges and their relatives. pg 366 |
| cnidaria or cnidarians | radially symmetrical, stinging-tentacled animals tht possess nerve networks and digestive sacs. pg 367 |
| digestion | the rpocess by which larger food molecules are broken down into smaller molecules that can be absorbed. pg 368 |
| platyhelminthes | the phylum containing bilaterally symmetrical, somewhat flattened worms. pg 368 |
| nematoda | the phylum containing the unsegmented worms. pg 369 |
| motile | capable of movement from olace to place, characteristic of most animals. pg 364 |
| filter feeding | feeding by straining suspended matter and food particles from water, typically by passing the water over a specialized filtering structure. Some animals that use this method of feeding are clams |
| sac body plan | The sac-like body plan has only one opening for both food intake and waste removal. Sac-like body plan animals do not have tissue specialization or development of organs. |
| tube within a tube body plan | This plan calls for two openings: one for food to enter the body (mouth), one for wastes to leave the body (anus). |
| mollusca | the phylum containing molluscs. pg 369snails, slugs, clams internal body cavity |
| gastropod | the snail, slug, characteristically having a single, usually coiled shell or no shell at all, a ventral muscular foot for locomotion, and eyes and feelers located on a distinct head. |
| cephalopod | the octopus, squid,having a large head, large eyes, prehensile tentacles, and, in most species, an ink sac containing a dark fluid used for protection or defense. |
| bivalve | A mollusk, such as an oyster or a clam, that has a shell consisting of two hinged valves. |
| annelida | phylum that includes segmented worms, such as earthworms and leeches. pg 370 |
| anthropoda | jointed-foot invertebrates: arachnids: crustaceans |
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