Friday 16 March 2018 photo 13/30
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Classification of mollusca pdf: >> http://eox.cloudz.pw/download?file=classification+of+mollusca+pdf << (Download)
Classification of mollusca pdf: >> http://eox.cloudz.pw/read?file=classification+of+mollusca+pdf << (Read Online)
Most mollusks have an open circulatory system. The meption are the cephlaopods. Classification. 1. Next to arthropods, the phylum Mollusca has the most named species in the animal kingdom. There are probably about 50,000 living species, not to mention some 35,000 fossil species. The phylum is divided into 5 classes.
ZOOLOGY 101 SECTION 7 LECTURE NOTES. Phylum Mollusca: - Mollusks, snails, clams, octopi, etc. Characteristics: 1. Body bilaterally symmetrical; unsegmented; usually with definite head. 2. Ventral body wall specialized as a muscular foot. 3. Dorsal body wall forms the mantle, which encloses the mantle cavity, is
They lack a shell and the foot. • The head is reduced; cylindrical worm-like body. • Mantle (dorsal epidermis) secretes calcareous scales or spines – providing the animal a shining appearance. • No true gills. • Anus empties into a posterior chamber(serve as mantle cavity). • Marine; In deep sea - abyssal (6000m or more);
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Mollusca - Classification. 2. Cephalopoda - octopus and squid. If you lose the shell and pull the foot down to make a series of tentacles, you make a squid or octopus.
Thick cuticular-epidermal mantle. Heart in pericardial chamber. Radula. Complete gut. Microscopic to 20 m. Giant octopus = 40kg. General Molluscan Characteristics
Phylum Mollusca - Mollusks - includes snails, slugs, clams, scallops, oysters, cuttlefish, squid, octopus. Widespread and abundant in marine, freshwater and terrestrial habitats. Surpassed by only arthropods in terms of success on land. Includes some of the largest invertebrates: giant squid, and giant clam. Economically
Classification of The Animal. Kingdom (Metazoa) olluscs include some of the best-known invertebrates; almost everyone is familiar with snails, clams, slugs, squids, and octopuses. Molluscan shells have been popular since ancient times, and some cultures still use them as tools, containers, musical devices, money, fetishes
An outline for the classification of Phylum Mollusca in taxonomic databases revised october, 2008; posted online june 2010. This is un unpublished document summarizing the options taken by the taxonomic editors for the higher classification units (below phylum, above superfamily) of the Mollusca, for the. European
Cephalopod molluscs, such as squid, cuttlefish and octopus, are among the most neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is the largest known invertebrate species. The gastropods (snails and slugs) are by far the most numerous molluscs in terms of classified species,
Annons