Invertabrates
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mgoldy1583 on February 15, 2011
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Invertabrates
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82 terms
Terms | Definitions |
|---|---|
 Invertabrates | Animals without a backbone |
| Vertabrates | Animals that have a backbone |
| Nematocysts | stinging cells |
| Gut | The viceral mass, also is an organ |
| Why are sponges the least complicated of all animals? | 1. Sessile 2. No nervous system or brain 3. Have no organs |
| How do sponges eat? | They are filter feeders, they suck in water into them with their pores, then the collar cell's flagella (fanlike) grab the plankton. Once the sponge is done with the water it pushes it out through the osculum. |
| Provide three examples of Cnidarians | jellyfish, hydras, and sea anemones |
| All Cnidarians have... (3) | 1. Nematacysts 2. Gut 3. No brain, but instead a complex nervous system (Ganglia) |
| Ganglia | A complex nervous system |
| Mesolea | Jelly-like filling of a jellyfish |
| Gastroderm | stomach lining of a jellyfish |
| Epidermis | Skin-like outer layer of a jellyfish |
| can a jellyfish's moulth expand? | yes |
| What are the six parts of a jellyfish? | Mesolea, Gastroderm, Epidermis, Moulth, Gut, Nematacysts |
| How and if do jellyfish move? | They move by drifting with the current- no controal over their movement |
| How do jellyfish eat? | Their nematacysts sting any food that drifts by and then the tentacles bring it into their moulth whitch then brings it to its gut. Once they are done eating they spew watse from their moulths. |
| What percentage of animals are Invertibrates? | 97% |
| What percentage of animals are Arthropods? | 75% |
| Provide three reasons why Flatworms are more complex than Cnidarians or sponges. | 1. Have a brain 2. Have organs 3. Have spots on either side of their head that detects ripples. |
| What kind of brain does a Planarian have? | Very primative, processes only simple thoughts like the location of food |
| What are the four types of Flatworms? | Planarians, Flukes, Tapeworms, Roundworms |
| Are Planarians Symmetrical? | Yes, they have bilateral symmetry |
| Can Planarians see? Feel? | Kinda, with eye spots that can detect light and dark. They have two bumps on either side of their head that detects light and dark |
| Most mollusks live... | In the sea- saltwater enviorments |
| What are the four body parts of a mollusk? | Foot, Viceral mass, Mantle, Shell |
| What does the viceral mas do for a mollusk? | The viceral mass is the interior of the mollosk, it is where the gut, gills, and other organs are |
| What does the mantle do for a mollusk? | The mantle is the layer of tissue surrounding the organs that keep them in place, protects, and covers them |
| What does the shell do for a mollusk? | The shell is on the outside for most mollusks except squid and octupi, it provides protection from pretaters |
| What does a foot do for a mollusk? | A foot is a muscular structure that allows the mollusk to move |
| Where is the moulth of an Echinoderm located? | The bottom |
| Where do most mollusks live? | The ocean, but some dwell in freshwater or on land |
| Name three types of mollusks and what they are similar to | snail/slug, octopus/squid, clam/oyster |
| WHat kind of body do mollusks have? | Mollusks are soft bodied and most have a hard shell |
| What is the most complex of all mollusks? | Squid and Octupi |
| Where are the ganglia of a squid/ octupi? | In a centralized location, or in a brain |
| Whta are some examples of the complexity of a squid or octupuses brain? | THey can build a shelter for themself and can make their way through a maze |
| What are the smartest Invertabrates and explain why? | squid/ octupi. They have a complex brain and have the ability to controal their pigment sacs, changing both texture and color |
| What kind of bone structure does a octapus have? | They don't have any bones |
| WHat is the smallest size a full grown octapus can fit through? | The circumfrance of a quarter |
| Where is the brain of a octapus or a squid? | around their throught in a doughnut shape |
| What do squid have on each sucker? | teeth in a circle |
| What is the toung of a squid or octapus or slugs called and what does it have on it? | The rudula, it is serrated with teeth |
| How do octupi and squid move? | With jet propultion, where they suck water in through a tube in their body and shoot it back out quickly- big end to small end, its how they move fast |
| How many babies do invertabrates have when they reproduce? | TONS |
| What is in the phylum of sponges? | sponges |
| What are plankton and name 2 types | vey small, zoo- like animal, phyto- like plant |
| WHat are the gills of a Squid or oroctupus like? | feathery |
| Where is the toungh of a Squid or oroctupus? | The radula is behind the beak |
| What does a Squid or oroctupus do it times of danger? | Pushes ink from its ink sac to its propultion tube whitch squirts it out whitch helps the mollusk get away |
| What does a fin so for a squid? | helps them change direction |
| What is a "Pen" | the squids shell, it provides structure to the body and allows controal of movement |
| How does a squid eat (DETAILS)? | THe tentacles, 2 longer than arms with suctions only at end grab the food and pass it to the shorter arms. The arms the pass it to the moulth and the beak and the radula whitch puree it down so it wont hurt the brain |
| What dont squid/octupus/cuttlefish have? | A outer shell |
| What is unique about squid/octupus/cuttlefish ? | They can controal their pigment |
| Name the 4 characteristics of a Arthropod | Jointed legs, segmented body, exoskeleton, brain |
| What does the jointed legs do? | They help the Arthropod move easily because they can bend at the joints |
| What are segmentred bodies? | each segment contains a special part like wings, gills, heart. |
| Brain of Arthropod is... | complex |
| Exoskeleton | Helps with movement, provides protection |
| Name 5 Arthropods | Butterfly, crab, lobster, shrimp, barnicle, ant, beetle |
| How developed are arthropods? | very; brain, nervous system, active hunters, eyes: images |
| Name two diffrences between crustaceans and insects | Crustacean- eye on stalk, insect- eye not on stalk. crustacean- live more in water and have gills, insect- live everywhere |
| Mandible | Jaws, crustaceans have them |
| Crustaceans have... | mandibles, 2 pairs of antenae, two eyes on stalks |
| What is the largest class? | insects |
| Whewree to Arthropods live? | Crust- marine (salt) water enviornments ( little others though), insect- everywhere except saltwater |
| Insects have... | head with good brain, eyes, a pair of antenae, thorax with six legs (some wings), abdomin with viceral mass, gills |
| Where and what are insect gills? | On the side of their body, they are holes |
| How do crustaceans mature? | THey molt- two difrences- soft, bigger |
| Insect change... | Metamorphosis |
| What are the 2 types of Metamorphosis? | Complete and incompkete. incomplete- insect looks just like the baby version of itself when its pold, except its bigger. Complete- the insect looks completely different as a baby than as an adult |
| Sessile | doesnt move, like barnicles, and sponges |
| Decode the name echinoderm | echino- spiny, derm- skin |
| What is a echinoderm's skin like? | bumpy/spiny |
| How do they protect themselves? | urchin- spiny, star- regeneration |
| regeneration- | can grow back arms, as long as have organs |
| Name 3 echinoderms? | starfish, sea urchin, sand dollar |
| Name 3 characteristics of echinoderms | Brain (nervous system) allows movement. Spiny/bumpy endoskeleton, all spins coverd in skin. radial symmetry |
| .Water vascular system | Helps animal move and get oxygen and food. It works by sucking in wiater through their tube feet and it squirts it out in various amounts to move |
| Rank sponges, Cnidarians, and Arthropods | Sponges have no brain, cnidarians have a not very complex ganglia, arthropods have a complex brain |
| Phylum of crustaceans and insects? WHat traits give them away? | Arthropods- jointed limbs, segmented bodys, exoskeleton |
| Difference of Active and Passive hunters? | Active hunter go and get their food, passive hunters go and get it. |
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