Many people think that spiders and arachnids are synonyms with the same meaning and classifications. Through this piece, one will understand various differences and similarities between the two. Spiders are a member of the order, Araneae, class, Arachnids, and the phylum, Anthropods. Within the arachnid class lies much diversity and a few common traits. Spiders are grouped into this class as well as scorpions, ticks, mites, and many more organisms. The order, Araneae, is comprised of spiders. How do spiders and arachnids compare? While spiders and arachnids have many mutual traits, spiders differ in some key categories. All arachnids have similar anatomies, one of the most common traits being the number of appendages. Arachnids develop with eight legs. However, some species of arachnids appear to have only six legs because they are sometimes converted for use in their senses. Since all arachnids have eight legs, they are easily distinguishable from insects, which have six legs. Arachnids also possess two other pairs of appendages that have evolved to help their feeding, defense, and senses. The chelicerae, the first pair of appendages, serve in feeding and defense from predators. The next pair of appendages is named the pedipalps. These appendages have been adapted for such uses as eating and digestion, to move or travel, and for reproductive functions. However, there are slight differences between some types of arachnids. For example, the order Solifugae is a branch of arachnids and encompasses over 1,000 described species. The appendages of Solifugae appear leg-like and therefore these animals appear to have five pairs of legs. The larvae of mites and Ricinulei have only six legs; the fourth pair appears when the... ... middle of paper ... ...ds and Scorpions often fight despite they are similar organisms. The entire order has much in common with all arachnids but also differ in some key categories. Works Cited Beccaloni, J. (2009). Arachnids. Berkeley and Los Angeles, California: University of California Press. Evans, A.V. (2007). National Wildlife Federation Field Guide to Insects and Spiders & Related Species of North America (National Wildlife Field Guide). New York; Sterling. Foelix, R.F. (1996). Biology of Spiders, 2nd Edition (2 ed.). New York: Oxford University Press, USA. Frost Gordor, Pam. "Scientists Believe Ancient Arachnids May Have Spun Silk Like Modern Spiders." OSU Research News Index Page. N.p., n.d. Web. 1 Mar. 2010. . Hayashi, C. (2010, February 3). Researching spider silks (Lecture). Iolani School. Honolulu, HI.
Crustaceans belong to the Arthropoda Phylum, which includes critters like ants, spiders, and centipedes. I know! Crazy to think that a delicious crab is in the same group as a spider! But they share similar characteristics. For starters, members of the Arthropoda Phylum do not have a backbone like you and me, so they are called __invertebrates__. And, as mentioned earlier, their skeleton is external, which is referred to as an __exoskeleton__.
Alexander Petrunkevitch’s story, “The Spider and the Wasp” carries a unique outlook on life through insightful diction that invokes one’s personal ideas and thoughts, while Virginia Woolf’s “The Death of a Moth” portrays a muted tone with familiar diction that makes it understandable.
Insects are among the most diverse animals in the world, with a large spread covering more than a million species found in all environments. Insects share several characteristics, which include the exoskeleton (a segmented body containing jointed appendages) and wings.
Wings - termites and ants both have wings during their flying cycle. Termites have four long wings of equal size. Ants also have four wings, but their wings are shorter. The back pair of wings is shorter than the front pair.
There are nearly one million species of insects known. Insects are defined by having six legs and a body divided into three segments: head, thorax, and abdomen. Chitin is an organic material that makes up an insects exoskeleton. There are three life cycles of insects, ametabolous or incomplete and paurometabolous or gradual, and homotabolous or complete metamorphosis. These life cycles are important in the aging of insects for aiding in legal investigations, (Houck and Siegel. Entomology).
In the animal kingdom, many types of insects work together to build their homes. For example, termites work together to create impressive mounds. Ants also work together to make their homes, known as nests.
If I were Gary Anderson, I would not accept to take up the position of a project manager after the director stated that this project would be his baby all the way (Dawn, 2010). This statement shows that the director will overshadow the project and potentially become a hindrance to ultimate outcome of the project. There is a possibility of conflict of interest developing.
They are covered in fur and in spines. They use their broad feet (which have either three, four, or five claws) for digging. Echidnas are divided into two categories, short-nosed and long-nosed. They hibernate if their food supply begins to decline rapidly, and usually when they wake up from their hibernation, the females are ready to mate. The male echidnas are larger than the female echidnas. They mainly eat bugs and worms and enjoy digging.
...s. They start out as an egg, quickly hatching into a larva. They soon after spin a cocoon around themselves. The larva will then change into a pupa. They now have eyes, wings, and legs.
Throughout history, there have been hundreds of urban legends that have been told over and over again and have been passed down through generations. Over the years, there has also been much debate as to whether or not these legends are myths or if they actually have some truth to them. One legend in particular that there has been a debate on is The Spider Bite legend. This Legend has been told dating all the way back to the 1970’s and has had many variations of the story ever since. There has been extensive research throughout the years as to whether or not this legend is actually possible and although evidence has showed that this legend is most likely just a myth there have been stories in the news that have questioned the validity
Although sharks belong to the class Chondrichtyes, there are many different types. Sharks arose about 350 million years ago and have remained virtually unchanged for the past 70 million years and still comprise a dominant group. It is thought that sharks almost certainly evolved from placoderms, a group of primitive jawed fishes. It took a long series of successful and unsuccessful mutations with fin, jaw positions etc to give us all the different designs of sharks around today. When asked to draw a shark, most people would draw a shape along the lines of the whaler shark family, tigers or a mackeral shark such as a porbeagle. However many people do not realize the sheer diversity in the shape of sharks, or that rays are really sharks. Seldom does such an animal inspire such a variety of emotions reflecting a mixture of fascination, awe and fear. Sharks have occasionally exacted a terrible price from humans who have trespassed on their territory. No better understood than the ocean that they inhabit, these creatures should be regarded in the same way as lions, tigers, and bears: as dangerous, predatory but nonetheless magnificent animals. Different Types of Sharks Living sharks are divided into eight major orders, each easily recognizable by certain external characteristics. Each order contains one or more smaller groups, or families. In all there are 30 families of sharks and they contain the 350 or more different kinds or species of sharks. The eight major orders of sharks include the Squantiformes, Pristiophormes, Squaliformes, Hexanchiformes, Carcharhiniformes, Lamniformes, Orectolobiformes, and the Heterodotiformes.
Arachnida is a subphylum of Arthropoda, consisting of over 100 000 species, many of them being parasites which can carry disease. They are found in all environments, and mostly have eight legs, which is a feature, together with the fact that they do not have wings or antennae, often used to distinguish them from the other subphyla, though there are exceptions. They include spiders, scorpions, ticks and mites. Their bodies are divided up into three parts: the cephalothorax, the opisthosoma and the thorax, and use a type of lung for gas exchange. Most Arachnids are carnivorous, and eat pre-digested insects and other small animals. They reproduce using internal reproduction usually lay eggs, except for the scorpion which bears living young. The word ‘Arachnid’ comes from the Greek word ‘Arachne’ meaning ‘spider’.
What are the differences between alligators and crocodiles? Aren’t they the same animal though, with different names? Well, actually one would be surprised by how different these two creatures actually are. Alligators and crocodiles are two of the most commonly confused animals out there. Their two families split from a common ancestor around 100 million years ago, thus forming two new families, known as the Alligatoridae and the crocodilian. This split caused them to adapt and live in different environments. The environment then played a major role in distinguishing their features and the appearance of their size, as well as their aggression levels towards humans and other animals. Learning more about these two creatures may actually open up your eyes and make you think about other objects that you see as one and may even change your attitude towards them. Alligators and crocodiles are very different in various aspects due to several factors involving their behavior and the environment surrounding them.
I find ants to be such a unique insect because of the fact that they can pick 50 times their own body weight, not even the buffest men can do that. Also for each human there are about 1.5 million ants which mean their reproducing system is very high and fast. Ants provide a huge amou...
Insect, small, air-breathing animal characterized by a segmented body with three main parts—head, thorax, and abdomen. In their adult forms, insects typically have three pairs of legs, one pair of antennae, and in most instances, two pairs of wings. Insects rank among the most successful animals on Earth. About one million species of insects have been identified so far, which is about half of all the animals known to science. That is why for every pound of human on the earth there are 10 pounds of insects. So that is why there are many reasons why insects are so successful, their exoskeleton, their size, their body function, the way they reproduce, and their development of metamorphosis.