Animalscaretips
Another common feature is a strong muscular foot that is used for movement or grasping. All molluscs also have gills, a mouth and an anus. A feature unique to molluscs is a file-like rasping tool called a radula.
- What is special about molluscs?
- How molluscs differ from other phylum describe?
- What are 2 differences in phylum Mollusca and phylum echinodermata?
- What is the difference between mollusc and mollusk?
- What are the economic importance of molluscs?
- What morphological feature gives Mollusca their name?
- What structures do all molluscs have in common?
- What anatomical feature typical of most molluscs and bivalve ancestors is absent in modern bivalves and what accounts for its loss in members of this class?
- What structures are unique to echinoderms?
- What type of organisms belong to phylum Echinodermata and phylum Mollusca?
- What makes a mollusk different than a crustacean or an echinoderm?
- How do molluscs breathe?
What is special about molluscs?
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.
How molluscs differ from other phylum describe?
Although there is no single feature that all molluscs possess, three features are so common in molluscs that they are used to distinguish them from organisms in other phyla: ... Molluscs have a mantle or mass of soft flesh that covers the soft body and encloses the internal organs.
What are 2 differences in phylum Mollusca and phylum echinodermata?
The key difference between Mollusca and Echinodermata is the habitat they live in. Molluscs live in both terrestrial and aquatic environments. In contrast, echinoderms only live in marine environments. ... Clams, oyster and squid, are some molluscs while sea cucumber, starfish and sea urchin are some echinoderms.
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 are the economic importance of molluscs?
Many gastropods, bivalves, and cephalopods are a source of food for many cultures and therefore play an important role in the fishing industries of many countries. In addition to their economic value as food, mollusks are also used to make jewelry the most notable and valuable example of which is pearl jewelry.
What morphological feature gives Mollusca their name?
3. What morphological feature gives the phylum Mollusca its name? The word “mollusc” means “soft thing”. Molluscs have soft bodies and this feature explains the name of the phylum.
What structures do all molluscs have in common?
WHAT FEATURES DO MOLLUSKS HAVE IN COMMON? As well as a shell, most mollusks have a muscular foot for creeping or burrowing. Some also have a head with sense organs. The soft body includes lungs or gills for breathing, and digestive and reproductive parts, all enclosed by a skinlike organ called the mantle.
What anatomical feature typical of most molluscs and bivalve ancestors is absent in modern bivalves and what accounts for its loss in members of this class?
The medial foot is wide. There are no mantle fusions ventrally, and the aerating water current passes through the mantle cavity from front to back, a feature not typical of most modern bivalves.
What structures are unique to echinoderms?
Echinoderms possess a unique ambulacral or water vascular system, consisting of a central ring canal and radial canals that extend along each arm. Water circulates through these structures and facilitates gaseous exchange as well as nutrition, predation, and locomotion.
What type of organisms belong to phylum Echinodermata and phylum Mollusca?
shellfish, any aquatic invertebrate animal having a shell and belonging to the phylum Mollusca, the class Crustacea (phylum Arthropoda), or the phylum Echinodermata. The term is often used for the edible species of the groups, especially those that are fished or raised commercially.
What makes a mollusk different than a crustacean or an echinoderm?
Mollusks have soft bodies, and most secrete a shell to protect it. ... Echinoderms don't have shells, but they have other means of protection. Their name comes from the Greek words for "spiny skin," and many echinoderms such as sea urchins have long spines growing from their bodies.
How do molluscs breathe?
Mollusks have a coelom and a complete digestive system. ... Aquatic mollusks “breathe” under water with gills. Gills are thin filaments that absorb gases and exchange them between the blood and surrounding water. Mollusks have a circulatory system with one or two hearts that pump blood.
