Arthropod

ing Lama Sherpa GEO 206-01 RESEARCH PROJECT EURYPTERIDS ABSTRACT 1.INTRODUCTION 
Eurypterids are a large extinct group of arthropods that ranged from 10 cm to 2 m in length. They belonged to the extinct order Eurypterida of the phylum Arthropoda, Subphylum Chelicerata and class Merostomata. According to the fossil record, the first Eurypterids were present in the mid-Ordovician and they thrived in warm shallow water until the late Permian when they went extinct. Thus, they lived for…

skeletons have two sets of antagonistic muscles (muscles that work in opposition to each other). These muscles are longitudinal muscles and circular muscles, which both help the animal maintain its shape. Exoskeletons are on the outside of bodies of arthropods. They vary in thickness, but are all thin and flexible at the joints to allow the animal to move freely. Endoskeletons are found inside the bodies of humans and other vertebrates. They encase and provide support for internal organs while…

neurotransmitter release. The pathophysiological effects associated with these toxins include diarrhea, vomiting, paralysis, dyspnea, convulsions, hypotention, respiratory failure and finally death [1] ………………… Centipedes are excellent predatory arthropods. The symptoms caused vary according to person and bite intensity. Pain and edema take a maximum of one week to subside, however, some bites take as long as three weeks (2). Other symptoms include; localized pruritus,…

The Cambrian Period was an era filled with a massive explosion of a variety of animals and ecosystems. It was a time where super continent Pannotia no longer existed. During this time period, North America remained above water and was eroded by running water. North American was also on the equator which meant warm climate. The continents were oriented very differently, the east coast of North America faced the south. Activities such as transgression of the sea, and carbonate deposition went on…

by molds also provide resistance to phagocytosis even some also represents several carnivorous fungi, which have developed hyphal traps to capture small protists such as amoebae, as well as roundworms(Nematoda), rotifers, tardigrades, and small arthropods such as springtails. Thus the enzymes able to catalyze complex substrates protects them from phagocytosis whereas they themselves phagocytize other life…

During this lab observations of the external and internal structures of seastars were examined through dissection. Most notably, seastars are creatures that are deuterostomes. First of all, deuterostomes are organisms within Echinodermata and Chordate phylum that developed anus first. The egg for echinoderms have a little quantity of yolk that allows the egg to divide in its first and second cleavage stage into four equal blastomeres; this is also known as holoblastic cleavage. Although, if the…

blood flow. An open circulatory system is found in arthropods and mollusks, open means that there are no vessels, so the blood is freely moving around in the animal’s body cavity or hemocoel. The heart forces out a blood-like substance into the hemocoel, and it goes around splashing all over the organs. The organs then all the sufficient nutrients in this process. In the hemocoel, blood and interstitial fluid is then combined into hemolymph. In arthropods, the heart is composed of a tube-like…

played with her volleyball at her garden, and saw a few butterflies are on her hat. She asked her mother if butterflies are vertebrates. Sarah’s mother, Amanda, said butterflies are not vertebrates because they are insects and they are part of the arthropods. However, the interesting thing was Sarah’s parrot which also can fly as a butterfly is a vertebrate because parrot is a backboned animal. She said that ant, ladybug, fly which usually have three pairs of legs are insects. After a few…

Colobus Guereza Suborder: Halporhini Superfamily: Cercopithecidae Family: Colobinae Colobus Guereza, or the Mantled Guereza, is a member of the Colobinae family, which contains Old World, leaf-eating monkeys. We chose the species for a couple reasons. First, its mantle of white long, white hair, which is distinct and the source of its name. Second, it is one of the only Colobinae species present in US zoos. The Mantled Guereza is endemic to Equitorial Africa. It can be found in forests,…

The prey is “ensnared in the web.” it wraps the prey in silk and injects digestive enzymes. One the enzymes have digested the prey the widow sucks up the juices. The black widow spider usually catches and eats a variety of arthropods. Black widows also eat other spiders and arachnids. This is useful for getting rid of crop eating pests. A small list of things they eat is flies, mosquitoes, grasshoppers, beetles, and caterpillars. Speaking of food, after mating the female eats…