Arthropods

The term terrestrial usually just refers to something that lives on land. Ants, flying insects, woodlice, spiders, are all mostly land-dwelling arthropods.

Its exoskeleton, or 'armour'. A new one has already grown underneath it as molting begins, and only needs some time to harden out afterwards.

Centipedes and other myriapods (like millipedes) belong in Arthropoda because they possess the physical and functional properties deemed characteristic of phylum arthropoda: joint appendages (legs, antennae), segmented body, and the chitinous exoskeleton.

All of these...

Some examples of arthropods would be scorpions, sausage flies, dung beetles, the north american lobster, horseshoe crabs, eurypterids.

Note that the term 'anthropod' should not be confused with 'arthropod' - anthropod is not a phylum nor taxon but is a general term meaning human or humanoid.

Arthropods are characterized by segmented bodies, an exoskeleton made from chitin, and joint appendages. They are known for their near universal domain on planet earth, being at least half of all living animals by count (by some estimates up to ninety percent), and the heaviest by biomass. They also have more species than any other animal phylum, and a notoriously daunting task to completely classify since estimates are that millions of species have yet to be described, particularly in Insecta.

Insecta...Cant Explain. Sorry. =) Try To Google It...

Arthropods include insects, spiders, millipedes, etc. Insects have the biggest impact on a lawn. This is because many insects eat grass. However, grass grows so quickly that unless you get a locust swarm in your yard, you'd never notice that bugs have been nibbing on it. Insects also help to fertilize the soil, which is good for grass.

No, arthropods do not have gastrovascular cavities. They have complete digestive systems.

Yes , it is .

I suppose you could call the crayfish the cousin of the lobster. Crayfish certainly look like lobsters. But they are fresh water animals and lobsters are salt water creatures.

Organisms would be classified as arthropods if they have segmented bodies, an exoskeleton made from chitin, and joint appendages. This includes arachnids, crustaceans, insects, and others.

Note that the term 'anthropod' should not be confused with 'arthropod' - anthropod is not a phylum nor taxon but is a general term meaning human or humanoid.

No, brine shimp prefer hot water over cold

The exoskeleton contains and protects the inner vital organs. It is usually made of chitin in insects and crustaceans, and of calcium carbonate in shellfish. There is a downside for a creature that is constantly growing: it has to enlarge its outer shell, or discard it and grow a new one, and it is vulnerable until the replacement shell is completed and hardened.

Phylum arthropoda does fall under the Protostomia clade characterized by bilateral symmetry and three germ layers.

Arthropods have open circulatory systems, with the internal organs bathed in a fluid called hemolymph, in an internal body cavity called a hemocoel. For hearts, arthropods have a dorsal tube that draws the fluid from open-ended pores (ostia).

This fluid differs from our blood in significant ways; in arthropods, there is no distinction between what we think of as blood and lymphatic fluids. Also, for those arthropods that have gills and use hemolymph as the oxygen carrier (some have no gills and get oxygen directly from tubes connected to the air, or have book lungs like the arachnids), they don't use hemoglobin like our red iron-based blood; instead they use the copper-based hemocyanin. Hemocyanin is not bound to proteins on blood cells but floats freely around in the fluid. It is greyish in color but when oxygenated turns somewhat blue.

Oh, they're not. Crustaceans are arthropods too, and they're aquatic. Almost all insect species fly. They're everywhere.

No, the rigid outer covering of arthropods is usually called the exoskeleton. In biology the mantle is a major anatomical component of a different phylum - molluscs, the tissue which contains the internal organs and in many molluscs responsible for secreting the mineralized outer shell.

The most common appendage would be the leg. Arachnids have eight legs, centipedes have LOTS of legs. I'm not sure how many legs the crustaceans have. I think it's eight. But many crustaceans have modified their two front legs into pincers. And insects have six legs.

Another example of an arthropod appendage is the mandible. That's what they have instead of jaws. Mandibles open side to side instead of up and down.

No bats are mammals

Adult lobsters live from the shoreline to beyond the continental shelf. Lobster eggs and larvae have a planktonic phase usually near the surface, for up to about 10 weeks, are subject to irregularities of ocean currents and can get carried beyond this zones. Lobsters also evidence the phenomenon of long distance migration which they accomplish in single-file formation; in these cases they still remain fairly close to the shore. In winter times the females may prefer deeper waters for warmth because of reproductive considerations.

Arthropods are characterized by segmented bodies, an exoskeleton made from chitin, and joint appendages.

Pleopods or swimmerets are mostly found in the decapod crustaceans, like crabs, lobsters, shrimp.