Mollusca Anatomy

Anatomy of molluscs. The phylum mollusca consists of over 100000 marine freshwater and terrestrial species.

Mollusca Mollusks Zoology

The edge of the mantle secretes a shell of calcium carbonate chitin and conchiolin.

Mollusca anatomy. Jump to navigation jump to search. Some also serve as intermediate hosts for parasitic trematodes and others eg snails can be major agricultural pests. Phylum mollusca class bivalvia.

They however also have many features in common. External and internal anatomy of a freshwater mussel. Molluscs have a huge range of shapes and sizes even with a single group like the gastropods.

Wikimedia commons has media related to mollusca anatomy. Oysters clams scallops and yes snails squid and octopods. 2body has more than two cell layers tissues and organs.

It has three layers and protects the main organs of the mollusk. 5body monomeric and highly variable in form may possess a dorsal or lateral shells of protein and calcareous spicules. 4body possesses a through gut with mouth and anus.

Mollusca anatomy function with some nematodes mantle cavity respitory systems open circulatory system developed eyes bilatteral head and food body wall forms mantle and mantle cavity. Characteristics of mollusca 1bilaterally symmetrical. The three most universal features defining modern molluscs are a mantle with a significant cavity used for breathing and excretion the presence of a radula except for bivalves and the structure of the nervous system.

Bivalves are easily distinguished from other molluscs by the presence of two shells or valves. Calcareous casing produced by the mantle. This category has the following 5 subcategories out of 5 total.

The foot although the basic form of the foot is a flat broadly tapered muscular organ which is highly. Shell many molluscs have shells. Most are familiar to you as food sources.

In limpets the foot is modified into a sucker which helps in anchoring the animal to hard surfaces. In swimming and sessile forms however the foot is greatly reduced or greatly modified. B bivalve anatomy 16 p c cephalopod zootomy 41 p g gastropod anatomy.

Coelem protect important organs. The shells of molluscs are formed of calcium carbonate 95 and organic components 1. The foot in the gastropods.

This is what is examined in this section. Other than these common elements molluscs express great morphological diversity. The feet of the molluscs carry out different functions in different classes.

Locomotion the foot is the organ of locomotion in land gastropods.

Molluscs Of Australia