WebJan 26, 2001 · A septibranch bivalve has a septum across its mantle cavity, which functions to pump in food. Thus, Bivalvia is the only molluscan class characterized by the absence of a radula. Most marine bivalves go through a trochophore stage before turning into a free-swimming veliger larva. This type of larva looks like a miniature bivalve with a row of ... Webbivalve, (class Bivalvia), any of more than 15,000 species of clams, oysters, mussels, scallops, and other members of the phylum Mollusca characterized by a shell that is divided from front to back into left and right valves. The valves are connected to …
Mantle Definition and Examples - Biology Online Dictionary
Webman· tle ˈman-tᵊl Synonyms of mantle 1 a : a loose sleeveless garment worn over other clothes : cloak b : a figurative cloak symbolizing preeminence or authority accepted the mantle of leadership 2 a : something that covers, enfolds, or envelops (see envelop sense 1) The ground was covered with a mantle of leaves. b (1) Weba coat of protein surrounding the nucleic acid core of a virus. nucleocapsid. the combination of the genetic material and protein in a virus. lytic cycle. infection, replication of viral nucleic acids and proteins, assembly of virions, and release of virions by lysis of the cell. lysogenic cycle. decorated sunglass case
Marine Biology Definitions Flashcards Quizlet
WebJun 8, 2024 · Bivalvia is a class of marine and freshwater molluscs with laterally compressed bodies enclosed by a shell in two hinged parts. Bivalves include clams, oysters, mussels, scallops, and numerous other families of shells. The majority are filter feeders and have no head or radula. WebOct 28, 2024 · The lower mantle is the lower liquid portion of the mantle ranging from 400 miles below the surface to about 1,800 miles below the surface. The lower mantle is incredibly large and takes up most ... WebJun 8, 2024 · The mantle (also known as the pallium) is the dorsal epidermis in mollusks; shelled mollusks are specialized to secrete a chitinous and hard calcareous shell. Figure 28.3 E. 1: A “generalized mollusk”: An anatomical diagram of a hypothetical ancestral mollusk, showing features common to many mollusk types. federal decree law no. 33 of 2021 download