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ZoologyT2D3
Day 3 lecture notes zoology
| Question | Answer |
|---|---|
| This class has no shell but do have calcium bearing plates. | P-Mollusca Class Caudofoveata |
| This class lives on the sea floor and eat decaying matter (other animals mostly) | P-Mollusca Class Caudofoveata |
| This class has a radula and gills but the radula is very primitive. | P-Mollusca Class Caudofoveata |
| Class Caudofoveata is a small group that not much is known about but we do know they eat mainly this | foraminifera protist life form |
| These resemble prototype molusk more than any other | P-Mollusca Class Solenogaster |
| These lack a shell but can have a spiky calcium based covering that has a fuzzy appearance | P-Mollusca Class Solenogaster |
| These live on the sea floor and eat nidarians mostly | P-Mollusca Class Solenogaster |
| This class has a radula, gills,a greatly reduced foot and an elongated body forms used for burrowing into the sand | P-Mollusca Class Solenogaster |
| The old term used for Solenogaster and Caudofoveata that meant without a shell | Aplacophora |
| This means (one shell) and most are extinct,and only fossil records exist have no openings in shell | Monoplacophora |
| There is only one living genus dreged up from the ocean floor | Monoplacophora |
| Animals that lack _______in enviromental change will die off | genetic variation |
| If the enviroment dosent change theres no need for _______ | genetic variation |
| Monoplacophora a very primitive but still show true __________ | Metamerism-(body segmentation) |
| They have 8 pairs of foot muscles 5 pairs of gills and bridges between lateral nerve cordes | Monoplacophora |
| These have 8 dorsal plates and their body is not segmented | Polyplacophoran |
| Foot acts as a suction cup - cling and scrape algae from rocks | Polyplacophoran |
| nervous system similar to flat worms | Polyplacophoran |
| Shell is very advanced and has many brightly colored shells | Polyplacophoran |
| These animals are diaechious with seperate males and females | Polyplacophoran |
| Respiration with these is carried out with rows of gills along the mantle cavity either side of the foot | Polyplacophoran |
| These have tusk shells and only dead ones are left | scaphopoda |
| This animal is elongated and bring food from the bottom to the top | scaphopoda |
| Their shells have no coiling and no torsion that’s open at both ends | scaphopoda |
| _______move water over the mantle @ the foot in scaphopoda | cilia |
| __________ in scaphopoda is ejected out the top so the gills wont be fowled | waste |
| Were used as currency that were easy to harvest with special brooms | scaphopoda |
| These tusk shelled mollusk are strictly marine animals | scaphopoda |
| This class is the most diverse and existed 550 million years before present | gastropoda |
| Most are univalve (one piece shell) some have lost shell secondarily | gastropoda |
| Their foot goes the whole length of their body and they glide over mucus | gastropoda |
| Their shell is for protection and has coiling and torsion | gastropoda |
| _____is a secondary function of the gastropoda shell | coiling |
| The shell is coiled for ______ and _______ Increasing mobility | weight reduction &balance |
| Torsion means that you are ________ | pulling the spiral out |
| Slugs and nudibranch have ________ | lost their shell all together |
| Nudibranch are marine animals that eat nidarians and move their __________on top | nemadocyst |
| These live on diverse diets being predators and grazers | gastropoda |
| Cone shell is a ________ gastropoda | toxic |
| These start life bilaterally symmetrical then they coil and tort, shell pressing one side | gastropoda lose organs on that side |
| Shell shifted to right side R-kidney and R-lung lost in ____ | |
| _________fowls gills bc of anus proxiemty | coiled shell |
| Some ________ get rid of their gills for lungs | |
| Gastropoda are economically important because they | are a food source |
| Class Bivalvias means _______halves and their old name is | two & pelycypoda |
| This class includes clams oysters and zebra muscles | Class Bivalvia |
| These are hinged along the back and are filter feeders that live on micro animals | Class Bivalvia |
| Class Bivalvia ______ are for feeding and respiration | gills |
| Cilia sweeps food stuck on gills mucus towards mouth | Class Bivalvia |
| Most Class Bivalvia don’t move but _________ do | scallops |
| Their nervous system is simple with no cephalization | Class Bivalvia |
| The most advanced mollusk class is | class cephalopoda |
| class cephalopoda | |
| class cephalopoda shells are internal except for the | Nautalis |
| These have only 6 living species living today | Nautalis |
| They have no suckers on tentaciles and may have up to 90 of them | Nautalis |
| ______eyes are very similar to vertebrates and evolved completely differently | cephalopods |
| Nautilus are the last living reps of the ______ | ammanites |
| Nautalis shell is _______ | mother of pearl |
| Nautalis shell gets heavier the older it gets but walls off ______ to get ______ | shell chambers ,bouncy |
| Nautalis eye dosent have a _____ | lens |
| Nautalis shell is coiled but not______ | torted |
| __________were the dominant predators in all oceans for 100’s of millions of years(500) | ammanites |
| The Nautalis goes back _______million years and is unchanged | 200 |
| The ancestral form of Nautalis were _______ | larger |
| The heart pumps through the body and then to gills in ______and is not efficient for gas exchange | non cephlapod mollusk |
Created by:
joefrank1982
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