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Crustaceans
Usually considered as a subphylum, Crustaceans comprise a group of arthropods including crabs, crayfish, lobsters and shrimp. Most crustaceans are aquatic animals, though some are terrestrial, parasitic and barnacles. Crustaceans have a chitinous exoskeleton, segmented body, and paired jointed limbs.
1,209 Questions
What makes lobsters different from other fish?
Lobsters are not fish. Fish are part of the phylum Chordata, along with other backboned animals (amphibians, reptiles, birds and mammals), and lobsters are arthropods (phylum Arthropoda :P), having no backbone and being completely unrelated (very much related to insects in fact). Lobsters have ten jointed legs and a hard carapace.
Is a lobster a commensalism mutualism or parasitim?
The commensalistic, mutualistic, or parasitic role implies a relationship with another organism, so that other organism might need to be specified. However, it can be said that lobsters primarily fill the predatory role with other sea organisms, since they predate upon shellfish, sea urchins, fish, etc. However, they are also eaten by other organisms, for example fish large enough to dig them out and crack their shells. In addition, humans highly prize them for their meat and harvest them. The predatory/prey relationship is usually referred to as exploitation, in that the predator benefits and the prey is killed. As such, none of the ecological roles commensalism, mutualism, or parasitism apply.
What are you lacking nutrient wise if you crave for lobster tomalley?
You're craving mercury. It's green because that's where the lobster's liver is and processes mercury.
What is the lobsters primary means of locomotion?
Because the adult lobster is benthic the primary means of locomotion are the walking legs or pereiopods. Occasionally, depending on climate and storm conditions, they group into chains for long-distance migration, a configuration which reduces drag and makes long distance travel more efficient.
As larvae, lobsters are planktonic and live near the ocean surface, drifting with the current; in their postlarval stage they can swim.
my advice is not to eat one but anything can be eaten even if not edible but dont because i heard if you eat them my fellow woman it can catch a diesease
Yes, but it is very different from the humans brain because it does not feel pain.
How much body segmants does a lobster have?
Lobsters belong to class Malacostraca, characterized by 20 body segments (rarely, 21). In lobsters, a tagma or segment group called a cephalothorax is present, a fusion of the head and thorax.
Yup, because crustaceans have jointed legs and segmented body.
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Does an earthworm have legs eyes antennae and a hard surface?
No, they do not. They have hairlike setae that anchors them to the ground, but no legs. Their skin is light sensitive. No antennae, and no hard surface.
What is the name of a roley poley insect?
Roly Poly insect in another name for a Woodlouse. These little bugs, often mistaken for an insect, when they are in fact Crustaceans, are called many names such as, Pill bugs, Armadillo Bug, Doodlebug, Cheeselog, Potato Bug, Roll Up Bug, Slater and Sow Bug.
Why was chthamalus unable to complete with semibalanus at the lower depths?
Because its fundamental niche is larger than that of the Semibalanus'.
Why are krill called 'keystone species'?
Oysters are a keystone species because of the important ecological services they provide to maintain or improve water quality and clarity. They cycle nutrients between the water column and bottom dwelling species. The diversity and abundance of oyster population are often cited as indicators of the environmental quality and overall health of coastal ecosystems.
How closely related is a lobster to a spider?
About as closely as we are to frogs. Crustacea and Chelicerata (arachnids) are different classes in the same phylum (Arthropoda), just like mammals and amphibians are different classes in the phylum Chordata (vertebrates).
Do pill bugs need to be removed from compost before adding to garden?
Not to worry . . . they will leave on their own accord. They hang around the compost bin because it is dark and moist. But when the compost matter is spread around the garden, then tend to leave for darker places.
What are the disadvantages of have an exoskeleton?
It doesn't keep your joints in place like a skeleton.
