Flashcards
Phylum : Mollusca whooooop
Cards in this deck (23)
- 1The next great lophotrochozoans areeee.....?Mollusca which literally means soft body
- 2Mollusca are usually small, or they are...?<10 cm
or
they are the biggest invertebrates i.e THE GIANT SQUID - 3Stratification on the Chesapeak bay was caused by...Oyster harvesting! Oysters are very good filter feeders and they were harvested too much causing stratifying layers in the C. Bay. ;(
- 4Mollusca have giant what?Nerve axons! This is helpful insight for medicinal work
- 5A mollusks hypothetical body plan has two main parts ...?> Visceral Mass
> Head-Foot - 6What is the Viceral mass?> Mantle
>Mantle Cavity
>Shell - 7A part of the Viceral Mass, what is the mantle?A tissue (skin) which is really muscley that encompasses the body organs of the mollusk
- 8The mantle is also the maker of a mollusks ___________, if it has one!Mantle makes the shell!
- 9The mantle cavity is open to the world! This means it functions as?>Excretion door
>Respiration area (with gills)
>Reproduction area - 10In the Head-Foot, what is the foot?It is for locomotion - either gliding on mucous, or by muscular foot contractions
- 11What has the foot developed into in cephalopods?Tentacles!
- 12What is the Head in the Head-Foot?Home to feeding and other sensory organs
- 13What are the Radula?Radula are ribbons of chitinous teeth that are attatched to a Odontophore cartiliage hold, the hold can move in and out for feeding!
- 14The radula are like spicules on porifera as theyconstitute as a taxonomic fingerprint!
- 15Which parts of the shell are made by the Mantle?> Periostracum: thin outer layer made up of conchiolin (the black stuff you see, protects shell)
> Pristmatic Layer: very strong calcium carb. prismatic stacks - trying to be replicated for human use
> Nacre: calcium carbonate but mostly smooth protein sheets - 16How are pearls made?A grain of sand will get stuck in the nacre (which probs hurts the molluscs lets b real) and mantle envelopes it and makes the pearl out of nacre!
- 17What symmetry to mullusca have? This means they are...?Bilatteral - which means they are coelomates!
- 18Most mollusca have ___________ circulatory systems except...?Open circulatory systems - makes them slow- except the cephalopds which have developed closed systems
- 19Do mollusca reprodue asexually?FUCK NO
- 20How to mulluska reproduce?> some are dieceous
> some are monoecious (hermaphrodites) - 21Marine and freshwater molluska larvae will befree swimming trochophores!
- 22Terrestrial mollusca have what kind of larvae..?Veliger larvae - this is seen in gastropods
and aquatic bivalves - 23—
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- Animal Diversity Flashcards on Phylum : Mollusca whooooop, created by Victoria Gates on 27/09/2018.
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- Victoria Gates
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