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.
All mollusks have a thin layer of tissue called a mantle which covers their internal organs. The mantle produces the mollusk’s shell. Clams, oysters, snails, and octopuses are all mollusks. … Most mollusks move with a muscular structure called a foot.
Beside this, Do mollusks have a mantle and a foot?
All mollusks have a visceral mass, a mantle, and a foot. The visceral mass contains the digestive, excretory, and reproductive organs. The mantle is a covering. It may secrete a shell.
Likewise, What are the four characteristics of mollusks?
– They are bilaterally symmetrical.
– They are triploblastic, which three layers.
– They show organ system grade of organisation.
– The body is soft and unsegmented.
– Body is divisible into three regions – head, a visceral mass, and ventral foot.
– Body is covered by a mantle and shell.
Also, What 2 other parts do all mollusks have?
– Most mollusk have two organs that are unique to this phylum: a specialized feeding organ called a radula and a dorsal layer of tissue called a mantle.
– Mollusks are the first animals to have evolved organ systems for respiration and circulation.
What makes a mollusk a mollusk?
Mollusk, also spelled mollusc, any soft-bodied invertebrate of the phylum Mollusca, usually wholly or partly enclosed in a calcium carbonate shell secreted by a soft mantle covering the body.
25 Related Question Answers Found
What are mollusks related to?
Mollusks are probably most closely related to organisms in the phylum Annelida, also known as segmented worms. This phylum includes the earthworm and leech. Scientists believe these two groups are related because, when they are in the early stage of development, they look very similar.
Do all mollusks have tentacles?
Mollusks have a hard outer shell. There is a layer of tissue called the mantle between the shell and the body. Most mollusks have tentacles for feeding and sensing, and many have a muscular foot. Mollusks also have a coelom, a complete digestive system, and specialized organs for excretion.
What three structures do all mollusks have?
Main characteristics of Mollusca : There are three distinct body zones: a head-foot, a visceral mass and a mantle. Some common features are : Unsegmented soft body with bilateral symmetry. Presence of an internal or external shell.
Do mollusks have a mantle?
Mollusks have a hard outer shell. There is a layer of tissue called the mantle between the shell and the body.
What are the 4 parts of mollusks?
The four important body parts in the mollusk could be listed as: Shell, Mantle, Visceral Mass and Foot.
What do all molluscs have?
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 are the 3 body parts of a mollusk?
The mollusk body can generally be divided into three regions: the head, the foot, and a cluster of internal organs called the visceral mass.
Which animals have a mantle?
In mollusks that have shells, such as clams, mussels, and snails, the mantle is what secretes calcium carbonate and a matrix to form the mollusk’s shell. In mollusks that lack shells, such as the slug, the mantle is completely visible.
What makes an animal a mollusk?
Molluscs are a clade of organisms that all have soft bodies which typically have a “head” and a “foot” region. Often their bodies are covered by a hard exoskeleton, as in the shells of snails and clams or the plates of chitons.
What are the 4 distinguishing characteristics of molluscs?
Main characteristics of Mollusca : Unsegmented soft body with bilateral symmetry. Presence of an internal or external shell. A toothed tongue (made mostly of chitin) called the radula. A mantle which is a fold in the body wall that lines the shell.
Do all molluscs have tentacles?
Many molluscs have tentacles of one form or another. … Some marine snails such as abalone and top snails, Trochidae, have numerous small tentacles around the edge of the mantle. These are known as pallial tentacles. Among cephalopods, squid have spectacular tentacles.
What are the 3 main body parts of a mollusk?
The mollusk body can generally be divided into three regions: the head, the foot, and a cluster of internal organs called the visceral mass.
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