What is the Latin meaning of Mollusca?
Etymology. From French mollusque, from New Latin Mollusca (phylum name), from Latin molluscus (“thin-shelled”), from mollis (“soft”); see Proto-Indo-European *mel-.
Are Mollusca omnivores?
There are aquatic and terrestrial molluscs. Some of them are herbivores, others carnivores and some omnivores. Molluscs are the most abundant invertebrate on our planet and are divided into three smaller subgroups: the gastropods, the bivalves and the cephalopods.
Are molluscs carnivores?
Virtually every feeding method is carried out by the molluscs, they may be herbivores, carnivores, scavengers, deposit feeders, filter feeders or parasites, these strategies are carried out by some members of almost all the major groups, there are some generalizations however that can be usefully made.
What is the term to open a mollusk?
The aperture is an opening in certain kinds of mollusc shells: it is the main opening of the shell, where the head-foot part of the body of the animal emerges for locomotion, feeding, etc. The term aperture is used for the main opening in gastropod shells, scaphopod shells, and also for Nautilus and ammonite shells.
Is Mollusca a Greek word?
Mollusca, meaning “soft-bodied,” is one of the largest phylums in the animal kingdom. The word mollusc (or mollusk) derives from the Latin word “mollis,” which means “soft.” There are an estimated 200,000 species of mollusk worldwide accounting for nearly a quarter of all marine life.
What is the origin of the word Mollusca?
Etymology. The words mollusc and mollusk are both derived from the French mollusque, which originated from the Latin molluscus, from mollis, soft. Molluscus was itself an adaptation of Aristotle’s τὰ μαλάκια ta malákia (the soft ones; < μαλακός malakós “soft”), which he applied inter alia to cuttlefish.
Do Mollusca have appendages?
Hint: Arthropods and molluscs are both invertebrates. Arthropods are organisms having exoskeleton and segmented bodies with paired appendages….Differentiate between Arthropoda and Mollusca.
| Arthropoda | Mollusca |
|---|---|
| Arthropods have wings to fly with jointed legs usually to their abdominal segments. | Molluscs have a muscular foot that helps in locomotion. |
Is Mollusca an exoskeleton?
Molluscs are mostly aquatic, and are named from the Latin molluscus, meaning “soft”. Their soft bodies are enclosed in a hard shell made of calcium carbonate (CaCO3), which functions as an exoskeleton. This shell is secreted by a thin sheet of tissue called the mantle, which encloses the internal organs like a glove.
What is the difference between mollusc and mollusk?
As nouns the difference between mollusk and mollusc is that mollusk is (us) (mollusc) while mollusc is a soft-bodied invertebrate of the phylum mollusca, typically with a hard shell of one or more pieces.
What is the Latin meaning of cephalopoda?
cephalopod (n.) one of a class of mollusks notable for having tentacles attached to a distinct head, 1825, from French cephalopode, from Modern Latin Cephalopoda (the class name), from Greek kephalē “head” (see cephalo-) + pod-, stem of pous “foot” (from PIE root *ped- “foot”).
What Colour is Mollusca blood?
blue blood
Most molluscs have blue blood because their respiratory molecule is hemocyanin, a type-3 copper-binding protein that turns blue upon oxygen binding. Molluscan hemocyanins are huge cylindrical multimeric glycoproteins that are found freely dissolved in the hemolymph.
What is the Latin meaning of the class cephalopoda?