Home

Plants

Tree of Life

ID
  
 
Healthy Home Gardening
 

Mollusca
Molluscs
Google: Mollusca Wikipedia: Mollusca
YouTube: Mollusca Search HHG
gardengeek
gardengeek

The Mollusca, common name molluscs or mollusks,[note 1] is a large phylum of invertebrate animals. There are around 85,000 recognized extant species of molluscs. This is the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats. Molluscs are highly diverse, not only in size and in anatomical structure, but also in behaviour and in habitat.

The phylum Mollusca is typically divided into nine or ten taxonomic classes, of which two are extinct. The gastropods (snails and slugs) include by far the most classified species, accounting for 80% of the total. Cephalopod molluscs such as squid, cuttlefish and octopus are among the most neurologically advanced invertebrates. Either the giant squid or the colossal squid is the largest known species of animal without a backbone.

The two most universal features of the body structure of molluscs are a mantle with a significant cavity used for breathing and excretion, and the organization of the nervous system. Because of the great range of anatomical diversity, many textbooks base their descriptions on a hypothetical "generalized mollusc", with features common to many but not all classes within the Mollusca.

Mollusca :
Aplacophora
Bivalvia
Caudofoveata
Cephalopoda
Gastropoda - Stomach Foot
Monoplacophora
Polyplacophora
Scaphopoda

?

Mollusca
Molluscs
Lophotrochozoa
Crest-wheel
Protostomia
Mouth First
Bilateria
Two-Way Symmetry
Eumetazoa
True Higher Animals
Animalia
Animals
Eukaryota
Eukaryota
Cells with a Nucleus

Re-Root the Tree with this Node


Phylogenetic Tree of Life

Learn how to create a custom
Tree of Life





© Copyright 2006 - 2020 HealthyHomeGardening.com.
All Rights Reserved.
Web Design by Artatom