Animalscaretips
- What part of a mollusk contains organs?
- Do mollusks have a gut?
- What are the gills of a mollusk called?
- What contains most of the internal organs in a mollusc?
- What 3 body parts do all mollusks have?
- What three environments are mollusks found in?
- Do mollusks have gills?
- Do mollusks have an endoskeleton or exoskeleton?
- Do Mollusca have appendages?
- Do mollusks have organs?
- What type of exoskeleton does some mollusks have?
- Which of the following is the organ used by mollusks for excretion?
- What structure contains the mouth of a mollusk?
- What is the function of the gills in mollusks?
- Which of the following does a mollusk use for movement?
What part of a mollusk contains organs?
All mollusks have: a visceral mass containing internal organs, including the digestive tract, paired kidneys, and reproductive organs. a mantle that surrounds but does not cover entirely the visceral mass and secretes a shell (if one is present). The mantle also contributes to formation of gills or lungs.
Do mollusks have a gut?
Mollusks have a radula for grinding food. A digestive gland is connected to the stomach. The tissue beneath the shell is called the mantle. The digestive system includes a gizzard, a stomach, a digestive gland, and the intestine.
What are the gills of a mollusk called?
A ctenidium is a respiratory organ or gill which is found in many mollusks. This structure exists in bivalves, cephalopods, Polyplacophorans (chitons), and in aquatic gastropods such as freshwater snail and marine snails.
What contains most of the internal organs in a mollusc?
Although mollusk body forms vary, they share key characteristics, such as a ventral, muscular foot that is typically used for locomotion; the visceral mass, which contains most of the internal organs of the animal; and a dorsal mantle, which is a flap of tissue over the visceral mass that creates a space called the ...
What 3 body parts do all mollusks have?
In general, mollusks have 3 body regions: a head, a visceral mass, and a "foot." The head contains the sense organs and "brain," while the visceral mass contains the internal organs.
What three environments are mollusks found in?
Mollusks live in most terrestrial, freshwater, and marine habitats. However, the majority of species live in the ocean. They can be found in both shallow and deep water and from tropical to polar latitudes. Mollusks are a major food source for other organisms, including humans.
Do mollusks have gills?
Respiration. Most molluscs have only one pair of gills, or even only a singular gill. Generally, the gills are rather like feathers in shape, although some species have gills with filaments on only one side. They divide the mantle cavity so water enters near the bottom and exits near the top.
Do mollusks have an endoskeleton or exoskeleton?
The shells you find littered along the beach are actually the 'skeletons' of invertebrate animals called mollusks. Unlike the internal skeleton of humans, mollusks actually have an external skeleton. This exoskeleton protects the animal's soft inner body parts and acts as a sight for muscle attachment.
Do Mollusca have appendages?
Typically they have shells but not hard appendages such as legs, antennae or other body parts.
Do mollusks have organs?
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 type of exoskeleton does some mollusks have?
The mollusc (or mollusk) shell is typically a calcareous exoskeleton which encloses, supports and protects the soft parts of an animal in the phylum Mollusca, which includes snails, clams, tusk shells, and several other classes.
Which of the following is the organ used by mollusks for excretion?
Mollusks have a coelom and a complete digestive system. Their excretory system consists of tube-shaped organs called nephridia (see Figure above).
What structure contains the mouth of a mollusk?
Most mollusks have a mouth structure called a radula. The radula has numerous tiny teeth along the sides and can be extended from the mouth to scrape algae from rocks.
What is the function of the gills in mollusks?
Gills are used to exchange oxygen and carbon dioxide in respiration. Cilia on the gills create a flow of oxygenated water through the mantle cavity, carrying off carbon dioxide and nitrogenous wastes. Bivalves like oysters and clams, have greatly enlarged gills that they use for both respiration and filter feeding.
Which of the following does a mollusk use for movement?
Most mollusks move with a muscular structure called a foot. The feet of different kinds of mollusks are adapted for different uses, like crawling, digging, or catching prey. Many mollusks have an organ called a radula (RAD you lah), which is a flexible ribbon of tiny teeth.
