Mollusk animal phylum Britannica The phylum Mollusca includes the gastropods snails, slugs, and periwinkles , bivalves clams, oysters, mussels, and scallops , cephalopods octopods and squids , and other, smaller classes All mollusks, except the cephalopods, have a highly muscular organ called the How Do Mollusks Reproduce Reference A Reproduction in mollusks can be sexual depending on the species All species produce eggs in most species, eggs are released from the female s body before fertilization The simplest mollusk reproductive system relies on this kind of external fertilization. How do mollusks reproduce answers How do organisms in the phylum mollusca reproduce The reproduction the squid starts when a male squid produces a special arm called a hectocotylus that transfers male sperm to the female squid The Reproduction of Gastropods Molluscs In molluscs, as in segmented worms Annelida , the first larval stage is the so called trochophora Trochophora Larva From this, an older larval stage develops, which is unique ly typical for molluscs Because of their sail like ciliate appendages those molluscs Reproduction Phylum Mollusca Mollusks use sexual reproduction to pass on there genes there is usually a male and a female with the exception of some snails that are hermaphroditic Some organisms such as oysters change there sex many time throughout their life in aquatic environments the most common form of fertilization is external, whereas fertilization in terrestrial snails is internal. Mollusca Reproduction Mar , Molluscs are protostomes, they have spiral cleavage and require separate sexes for reproduction Some can be hermaphrodites, for example snails because of their slow movement they have the ability to change sexes.
[PDF] Download ☆ The Mollusca: Reproduction | by ☆ Karl M. Wilbur A.S. Tompa N.H. Verdonk J.A.M. Van Den Biggelaar 309 Karl M. Wilbur A.S. Tompa N.H. Verdonk J.A.M. Van Den Biggelaar
Title: [PDF] Download ☆ The Mollusca: Reproduction | by ☆ Karl M. Wilbur A.S. Tompa N.H. Verdonk J.A.M. Van Den Biggelaar