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Clams Oysters and Scallops
Clams, oysters and scallops are bivalve mollusks native to both freshwater and saltwater habitats. Many are edible and some types of oysters produce the world’s freshwater and saltwater pearls. All questions about clams, oysters and scallops can be directed here.
1,488 Questions
How do you tell if clams are alive?
well clams tend to react when you tap them hard and close their shells...thus if you tap it and it doesn't close its dead....also if it smells....though pet clams are not really advisable anyway as they eat plankton and will more or less end up dead...quickly
Is a mollusk with a shell a vertebrate?
A lobster is a crustacean. Crustaceans are a type of Arthropod which is an invertebrate.
Crustaceans have a hard, external shell which protect their bodies. Crustaceans have a head and abdomen. The head of a crustacean has antennae which are part of their sensory system. The abdomen includes the heart, digestive system and reproductive system. The abdomen also has appendages, such as legs, for crawling and swimming. Many crustaceans also have claws that help with crawling and eating.
Can a giant clam hold a person down?
Yes. It is quite possible for giant clams to latch on to your hand. They will not purposely bite you, it is instinctive that they close when they feel threatened. The clam can bite down at 225 PSI. That is enough to break every bone in your hand. My recongmindation to you is to NOT put your hand in a Giant Clam. IT will come down.
No - Crabs are crustaceans and have an exo skeleton meaning they have no bones under their shells
How does the eastern oyster defend itself?
An oyster's defense mechanism is its shell because it protects the soft bodied animal from predators. Another defense mechanism is its muscles to close the shells together when it feels threatened. It immune system protects it from invading disease organisms.
an area prepared for the maturing of oysters to be harvested and sold.
How are sea stars able to get clams open?
Clams open when cooked because of the pressure that builds inside of them. When temperatures increase the molecules and atoms inside of the shell move fast enough to pop the shell open.
They close up in their very hard shells and spring into a small hole or area where their predator can't reach them. They close up in their very hard shells and spring into a small hole or area where their predator can't reach them.
What type of symmetry do clams have?
Tricksy question. Well, without a picture it's difficult to say but let's assume we're talking about the generic shell image. Let's also assume the shell is 2D as if the picture is all we know of the object.
This then becomes a pretty classic point-group question.
So what operations can we do to this shell? Well, we can spin it by 180degrees and it'll look the same. So it has a C2 symmetry...it is also symmetrical along that same axis via reflection rather than rotation.
So the reflection symmetry is in the same plane as the principle axis...we call this C2V, and that's what I would class a scallop as.
But this is very difficult to explain or estimate without pictures and the like. All I can do is advise you to search for a "point group flow chart" online and then maybe "point group examples" to help you relate them to real objects or (usually more relevantly) molecules.
Good luck!
How does a clam draw water into its mantle cavity?
They give off a chemical called Bhostanica which allows the membrane to allow substances to move in and out
What do the rings on the clams shell indicate?
The rings on a clam show where the growth of one year ends. Basically you can count the rings to see how old the clam is just like a tree! Each ring shows the growth of that year.
Why are giant clams endangered?
Because, people catch clams and then they eat them and sell their shells too make lots of money off of them.
Where is the mantle of a clam located?
The mantle of the clam lines the valves, and serves to secrete calcium carbonate in the formation of the clam's shell while protecting the clam's visceral mass.
Why do oyster not need to shed its shell?
The oyster's shell provides protection from predators. Oysters do not need to shed their shell because the eat and expel waste products buy opening their shells and pumping water in and out with hairlike structures call cilia.
What is the habitat of the common clam worm?
Clams (the salt water kind) live in the inter-tidal zone to shallow ocean. Fresh water clams live in the bottom of rivers or lakes.
What are some mollusk adaptations?
A radula for scraping algae off of sea rocks, a mantel (Like an internal shell) to protect internal organs, tube feet to move swiftly across the ocean floor and to keep the current from pulling it back.......
They digest through the grooves in their gills. Then they bring the food in through thr radula to their mouth. The food then goes to the digestive gland and to the intestine. Finally, the waste leaves through the anus.
Yes, they feed and excrete waste products. They also have gills, and small, thin-walled blood vessels, a small three-chambered heart and two kidneys, located on the underside of the muscle, remove waste products from the blood.
No, clams are not acoelomate; they are coelomates. Clams belong to the phylum Mollusca and possess a true coelom, which is a body cavity located between the gut and the outer body wall. This coelom allows for the development of complex organ systems. Acoelomates, on the other hand, lack a coelom and include organisms like flatworms.
The most southerly town in the south island nz well know for oysters?
Bluff Hill In Napier is famous for its product 'Bluff oysters'
