advertisement

MOLLUSCA Power Point

33 %
67 %
advertisement
Information about MOLLUSCA Power Point
Education

Published on February 20, 2008

Author: Melinda

Source: authorstream.com

advertisement

MOLLUSCA:  MOLLUSCA “Rockin’ Earth since the Precambrian” Key Features of Mullusks:  Key Features of Mullusks Mollusks are coelomate invertebrates (they lack a backbone and possess an internal cavity also known as a coelom) Mollusks are bilateral (they develop equally on both sides and are not radial) In most mollusks, the ventral side develops into a locomotory organ, such as the foot, or broad flexible disc. Most produce a hard exterior shell while some produce an internal shell; however, a few species have no shell such as garden slugs or sea nudibranchs. Posses a mantle (A “fleshy fold” that surrounds most of the body and protects the major organs) All classes of mollusks excluding the bivalvia have a radula (A tooth like chitinous ribbon used to tear apart food and bore holes in prey) The nervous system is composed of a relatively undeveloped brain and organized ganglia (A group of nerve cells forming a nerve center) Features Shared With Related Groups:  Features Shared With Related Groups Tissue: Radiata Platyhetminthes Nematoda Rotifera Annelida Anthropoda Lophophorates Echinodermata Chordata Bilateral Sym.: Platyhetminthes Nematoda Rotifera Annelida Anthropoda Lophophorates Echinodermata Chordata Body Cavity: Nematoda Rotifera Annelida Anthropoda Lophophorates Echinodermata Chordata Coelom: Annelida Anthropoda Lophophorates Echinodermata Chordata Protosome: Annelida Anthropoda Get Acquainted With Mollusks!:  Get Acquainted With Mollusks! Mollusca Conchifera Aculifera Solenogastres Caudofoveata Placophora Tryblidiacea Gastropoda Scaphopoda Bivalvia Cephalopoda Phylum Sub-Phylum Class Kingdom Animalia Two Classification Systems: Gastropoda Scaphopoda Bivalvia Cephalopoda Aplacophora Polyplacophora Monoplacophora 1 2 Fundamental Biology:  Fundamental Biology World distribution could rival some extremophiles Extreme Habitats: -Deepest parts of the ocean under immense pressure at thermal vents to the thin air at 5,000m on the Himalayan Mountains -Thermal springs at temperatures reaching 104 degrees Fahrenheit, to ice frozen from artic winters Reproduction: -Sexual -Different species have adapted to accommodate their motion capabilities: Many of those species which are fixed in location are hermaphrodites, meaning they possess the sex organs of both sexes. Other mobile species are known to fertilize an area in hopes of fertilizing a patch of eggs left by a female. More Fundamental Biology:  More Fundamental Biology Mode of Nutrition: -Heterotrophic -All classes of mollusks excluding the bivalvia have a radula - used to scrape algae from hard surfaces or attack and kill prey. Others species entrap prey with projectile mucus, or secrete acid to kill, immobilize, and decompose what they are hunting Ecological roles: -Herbivores (primary consumers) feed off of local plant life, such as algae, weeds, or crops -Carnivores (secondary consumers) prey on the primary consumers and keep their population at equilibrium, which in turn helps the plant life remain abundant -Decomposers break down the dead and decaying matter in their habitat Why Mollusks are Important + Fun Facts:  Why Mollusks are Important + Fun Facts Everyone is familiar in someway with at least one member from the amazingly diverse phylum known as Mollusca. A variety of mollusks, such as clams, scallops, shellfish, and even squid and octopi, provide an appetizing seafood dish. The shells of mollusks have been used as ornamental jewelry, charms, and even currency. Of course, pearls make for highly valued earrings and necklaces. Countless horror movies were produced with inspiration from the unknown tentacled-monsters based on squid and octopi. Bulinus globosus, an aquatic snail found in northern Zimbabwe, hosts a parasite which causes the disease schistosomiasis, and is a major health problem in many developing countries. On the other hand, venom produced from some species is being researched for medical use A species of Octopus has the uncanny ability to imitate other creatures to escape predators Slide8:  Pictures as taken from www.personal.psu.edu/slr934

Add a comment

Related presentations

Related pages

PowerPoint Presentation - The FreeZone

Title: PowerPoint Presentation Author: Stacy - McGraw-Hill Higher Education Last modified by: jon scales Created Date: 11/7/2002 3:12:30 PM Document ...
Read more

PPT – MOLLUSCA PowerPoint presentation | free to view - id ...

PowerPoint Templates - Are you a PowerPoint presenter looking to impress your audience with professional layouts? Well, you’ve come to the right place!
Read more

PPT – Phylum Mollusca PowerPoint presentation | free to ...

Phylum Mollusca – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: e71c-OTU5N
Read more

Ppt Filum-mollusca | Powerpoint Presentations and Slides ...

View and Download PowerPoint Presentations on FILUM MOLLUSCA PPT. Find PowerPoint Presentations and Slides using the power of XPowerPoint.com, find free ...
Read more

Kunena :: Topic: Download power point mollusca (1/1)

Download Power Point Mollusca - Today Downloads: 344 - Yesterday Downloads: 499 - Last Week Downloads: 2119 - Total Downloads: 22279 - Speed:
Read more

PPT - Mollusca and Annelida PowerPoint Presentation - ID ...

Mollusca and Annelida. Tom McTernan Brian Munger. Mollusca General Info. 150,000 known species Most mollusks are marine, but some live in fresh water ...
Read more

Ppt Mollusc | Powerpoint Presentations and Slides » View ...

View and Download PowerPoint Presentations on MOLLUSC PPT. Find PowerPoint Presentations and Slides using the power of XPowerPoint.com, find free ...
Read more