Arthropods

Snails are called snails becuase, in 1912 a person named S. Ingerney found one. He recalled that it looked like a giant nail. He named the species nail. After a while, he got a black lung disese and died. A person interested in the species "nail" looked in Dr. Ingerney's diary, it said that he wished for the species to be called a more interesting name. So, the person changed the name to snails.

hemolypmh

Arthropods have exoskeletons made of chitin. However, chitin is not a protein. It is actually a derivative of glucose, which is a carbohydrate.

The roots of a plant are responsible for the intake of ground water to nourish the plant. If the plant has very little roots but a huge stem system, it will not be able to absorb the water necessary to nourish the plant.

Imagine if you would that you have a gallon of water in front of you. The daily temperature has been over 90 Degrees and you're extremely thirsty. You've been told that you can only drink from the gallon if you use a coffee stir'er as a staw.

Since the coffee stir'er has a very tiny opening to get water though, it would take you hours and hours to re-hydrate your body. The same holds true with a plants root systems.

fossils

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

Arthropods have all of these characteristics: * The body is divided into segments. * Paired and jointed appendages (legs, antennae, claws, and external mouth parts) * Exoskeleton (hard outer covering made of chitin and no internal bones). Periodically, the rigid exoskeleton is shed in a process called moulting. * Bilateral symmetry (each side is a mirror image of the other side). * Specialised mouth parts * Compound eyes (like a fly) * The circulatory system an open one, the only blood vessel usually being a tubular structure dorsal to the alimentary canal with lateral openings in the abdominal region. * The nerves run along the lower part of the body below the digestive system - all except the brain. * Respiration by means of gills, or tracheae and spiracles. * The sexes nearly always separate. Not all of these characteristics are unique to arthropods, but the combination makes an arthropod, and all must be present.

Not all arthropods live in a dry environment; many like the crustaceans are aquatic, and even the crustaceans that aren't tend towards moist land areas. Those with gills that venture onto land areas, like crabs, need to keep gills and other membranes moist for gas exchange, and either live in damp areas or return periodically to water. Those that live in dry environments carefully regulate water and practice strategies to aquire and retain it. For example they uptake water through specialized mouthparts and other appendages, by having guard cells in their spiracles to prevent dehydration, by aquisition through diet, by direct absorbtion through their bodies from soil or other damp material, and other methods.

The term 'arthropod' comes from the Greek arthro [arthron] (joint) and pod [pous, podos] (meaning foot or leg) hence, the jointed appendages characterization of the phylum. The reason for the name is because of observations about members of the phylum; since they have a hard exoskeleton, the joints about which the hard sections would have to rotate would be on the outside and thus a more obviously apparent characteristic. Contrast with vertebrates with joints on the inside where the bones are located and generally not on the surface, or molluscs, cephalopods, round worms and others without apparent joints owing to their general lack of need for significant rigidity.

No, bunnies have a backbone (spine) and are chordates (phylum Chordata) along with other mammals, lizards, birds, amphibians, etc. To be an arthropod (phylum Arthropoda) you'd need to have an external skeleton (exoskeleon) made from chitin.

A crawfish is an invertebrate. It has an exoskeleton (outside of the body).

Isopods are crustaceans, as are lobsters. Crustaceans are a class in the phylum Arthropoda.

Fish, however, are a class in the phylum Chordata, or vertebrates. So, not related to isopods, or lobsters. ^^

Usually people that are Asian, or come from Asia, are double jointed. But still, it's possible to have someone that is not Asian be double jointed?

Most species? Insecta, and within that, beetles, by far.

Woodlice are crustaceans, like crabs and lobsters. They have gills like them, not lungs, so they only live in damp places!

Arthropods are invertebrate animals such as crustaceans. An arthropod that is useful to humans is the lobster, as it can be eaten.

Most arthropods utilize legs or fins to move, but some of the following animals have unusual movement systems; some clams can jump, squid use biological jet engines to shoot water out of their bodies and propel themselves, extinct anomalocaris used flat rows of spikes made of chitin (typical arthropod exoskeleton material) to propel themselves by doing a wave motion that slowly, but effectively, through the water by pushing water behind themselves. But sometimes sacrifices energy to accelerate.

The term 'class' has a specific connotation within taxonomy and there exist subdivisions between phyla and classes which might make the comparison easier. Under arthropoda are Subphyla Chelicerata, Myriapoda, Crustacea, and Hexapoda. (There is also an extinct class Marrellomorpha and an the extinct Trilobite subphylum). The chelicerata, like spiders, scorpions, mites, etc., get their name from having appendages appear before the mouth; myriapods like centipedes and millipedes characterized by a high count of body segments and legs; crusteceans like crabs, shrimp, woodlice characterized by their biramous (two-part) limbs and a specialized larval form; hexapoda named for their consolidated thorax with only three pairs of legs.

Many classes exist below these subphyla each with specific characteristics; for example classes Arachnida which are terrestrial and eight legged, Chilopoda which are metameric and have one pair of legs per body segment, Branchiopoda which have gills on their appendages, Insecta with their three part body and three legs, and Malacostraca which have usually 20 body segments divided into head, thorax and abdomen - but there are many more.

Yes, but it's called an exoskeleton. ^^^

I hope this helps (indirect problems)

Exoskeleton usually don't cause arthropods problems except when they're growing. Arthropod are like snakes the must break out of their shell in order to grow bigger. When arthropods break out of their shell they must wait until the new skin hardens and becomes a shell again. During this time most arthropods vulnerable to prey due to the lack of protection from their shell

Another problem would be the size of a crevice or hole when fleeing predators. If at the time of attack by a predator , the rigidity of the outer shell limits the size of the shelter to escape to.

The american lobster's taxonomy would look like:

Kingdom: Animalia

Phylum: Arthropoda

Subphylum: Crustacea

Class: Malacostraca

Order: Decapoda

Family: Nephropidae

Genus: Homarus

Species: H. americanus

An arthropod is an invertibrate that has an exoskeleton, a segmented body, and jointed attachments called appendages, and an annelid is an animalia with worm-like features.

Their exoskeleton limits growth; if arthropods were large, their armour would be too heavy and they'd collapse! Also they use trachea to absorb oxygen, and if they were large, these wouldn't reach through their entire body and cells would die off in areas further away from the oxygen supply. This is why they did get large in the Carboniferous era, when oxygen concentrations in the atmosphere were much higher. :)

The most obvious arthropod name to begin with a 'b' would be.. a bee!

List would also include bedbugs, beetles, box elder bugs, bumblebees, butterflies. Names starting with Brown and Black would also work, like Brown Recluse spiders and Black Swallowtails.