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| What are the names of the three phylums this Exam is on? |
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Definition
| Mollusca, Annelida, Arthropoda |
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| soft-bodied animals with a shell. ex clams, snails, slugs, and squids. |
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| segmented worms. ex: leeches, earthworms, marine feather dusters. |
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| What are the three parts of Mollusks? |
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Definition
| Visceral mass, mantle, and foot. |
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| has 8 overlapping plates and covers the visercal mass. |
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| What class do Chitons belong to? |
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Definition
| Class Polyplacophora (many plates) |
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| To what class does the snail belong? |
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Definition
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| Describe the shell of Snail. |
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Definition
| No shell or shell is spirled. This occurs when torsion rotates the visceral mass 180 during development. |
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| Where is the mantle in a Snail? |
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Definition
| Just above the head at the anterior end of the shell. |
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| The visceral mass houses: |
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| a hard,grooved surface in the mouth used to scrap up food. |
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| gastropods, chiton, and bivalves colonize by: |
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Definition
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Definition
| Class Bivalvia. small bivalve-shaped larvaevof the Bivalves. The Glochidium must attach themselves ontho the gills or the fins of a fish until they develop into small clams. |
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| What are 4 things that seperate Cephalopoda from other mollusks? |
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Definition
The muscluar movement of the mantle is used to direct water flow instead of cilia. Water enters the mantle and exits out the siphon creating a swimming motion. The foot of Cephalopodas is a ring of arms and tentacles with suckers. The shell is reduced and internalized. It has the most highly developed head foot, controlled by an axon. |
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Term
| In Cephalopodas, the headfoot is connected to the mantle via the: |
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Definition
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| The shell of Cephalopodas is: |
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Definition
| reduced and internalized. |
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| The foot of the Cephalopoda is: |
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Definition
| a ring of arms and tentacles. |
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Definition
| Drawing water in using the musclular wall of the mantle and then creating jet-proplusion by forcing water out the Siphon. |
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Term
| When dissecting a squid, be careful not to burst the: |
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Definition
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Term
| Clams have an open or closed circulatory system: |
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Definition
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Term
| an open circulatory system means that: |
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Definition
| blood is not always enclosed in vessels. |
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Term
| Of the Mollusks, what class in the most cephalophized? |
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Definition
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| The largest eyes and brains of the Mollusks are found in what class? |
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| List some key charateristics of Annelidas: |
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Definition
Triploblastic Eucoelomate Protosomes Produce trochophore larvae segmented gas exchange through skin or gills closed cirulatory system excretory system consists of a pair of nephridia per segment. nervous system consists of anterior ganglis connected to ventarl nerve cord. |
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| mesoderm-derived lining of the body cavity of true coelomates. |
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| Annelidas have what body plan? |
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| Hirudinodia are leeches. They have two suckers. They realease Hirudin, which prevents the coagulation of blood. |
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| enzyme secreted by the Hirudinoidea that prevents the coagulation of blood. |
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Definition
| Marine annelids with well-developed heads and antennae. |
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Term
| An example of a Polychaeta is: |
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Definition
| The Marine Feather duster worm. |
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Definition
| Annelids with few setae and lack of external specialization. No head with antennae, eyes, or suckers. |
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| An example of the Oligochaeta is |
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Definition
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| The nervous system of the Earthworm consists of: |
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Definition
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| The bilobed dorsal ganglis lie above the: |
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Definition
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| The dorsal ganglia are connected to the |
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| Sexually, Earthworms are: |
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| Earthworms can or cannot self-reproduce? |
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| The extinct group of Anthropodas we looked at in class was: |
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| The most obivous feature of Anthropodas is the |
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| The exoskelton is known as the: |
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| a modified polysaccharide |
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Definition
| Breathing tubes in Annelids |
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| Stage between successive molts. |
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| insects of the sea. many biramous appendages. |
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| fused head and thorax of crustaseans |
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| Rigid part of the exoskelton that covers the cephalothorax. |
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| Horsecrabs have ___ walking legs |
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Definition
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Definition
| Found in horsecrabs. Internal spaces where blood circulates freely. |
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| General body plan of Arthropoda |
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Definition
| Metamerized with jointed appedages |
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Definition
| fused recognizable regions bearing different appendages |
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| Fuild filling the coelom of Arthropods |
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| Chelicerae are the appendages used y the Chelicerata in feeding. |
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| the egg hatches into a nymph, which is a smaller version of the adult(although sometimes wingless). |
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| postembryonice developmental process that changes the first instar into an adult. |
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| simple eyes in Anthropodas |
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