All animals are quite different, especially in appearance. Common features may be found if major differences can be looked past. If the smooth, slimy skin of a hagfish and the hard, ridged shell of a snapping turtle are stripped away, some shared characteristics may arise. Hagfish and snapping turtles have certain similarities and differences in important life processes that all animals depend on to live, such as procuring and digesting nutrients, supporting themselves, and their sense organs. Procuring and digesting nutrients happens in different ways in all different organisms but it all happens with the same goal of nourishing their bodies to continue living. Snapping turtles have a tongue that is thin and pink, appearing as a worm which …show more content…
attracts prey1. That paired with their darker shell and body, which allows them to blend in with the darker colored and murky water they swim in, keeps prey from recognizing the fact that the pink wormlike tongue is attached to a predator. Hagfish use both chemical detection and feeling movement in the water. They feed on both living and dead organisms such as small crustaceans and dead fish that have sunk to the bottom of the ocean, or wherever the hagfish may be residing. Hagfish produce a thick slime that enables the to slip within a small opening of a carcass, usually the mouth, and allows them to move around within the carcass without causing injury to itself. Hagfish do not have jaws but they do still have teeth attached to a dental plate.
The way hagfish get around not having a jaw to move their teeth up and down to bite like a human or any jawed animal might, is that the dental plate that has teeth can be moved. While at rest, the dental plate is within the mouth, and the teeth point inward. While the hagfish is feeding, the dental plate can be pushed out, exposing the teeth2. The teeth then can hook onto food, and the dental plate being pulled back in raspes the food into the mouth of the hagfish. Snapping turtles do not have teeth but they do have jaws. The way a snapping turtle gets by not having teeth is that their jaws have jagged edges that they use like scissors to tear large chunks of flesh off of their prey1 or to bite of the limbs of smaller animals such as …show more content…
frogs. Snapping turtles have a digestive system that includes a stomach with a singular chamber, large intestines and a cloaca, which is where the excretory, reproductive, and digestive systems meet. Snapping turtles and other omnivorous turtles tend to have shorter large intestines as opposed to herbivorous turtles, who need longer large intestines to fully digest plants, due to the cellulose in plant cell walls[1]. Hagfish do not have a stomach or large intestines. They have a gut that runs through the body that secretes a mucus bag around the food. Digestive enzymes fill the bag and digest the food[2]. Hagfish have a skeleton made of cartilage.
It starts with a cranium made of plates of cartilage fused together. The gills are supported by cartilage as well. They also do not have a back bone but instead retain their embryonic notochord to protect their spinal chord. The notochord is very flexible, allowing hagfish to tie themselves in knots to aid in feeding and escaping prey. A basal plate is found in the mouth where muscles within the mouth, such as the tongue, are attached to. The dermis, under the epidermis, is tough and rigid, which maintains the hagfishes body shape and is what muscles within the body can attach to to allow movement[2]. Snapping turtles have a skeleton made of bone. Their ribs are larger than a normal vertebrates ribs, to support a thick carapace or shell. The ribs span from the backbone to edge of the shell. The backbone that surrounds and protects the spinal
chord.
The differences are due to the differences in environment, habits, size etc. One example is the fact that minks and humans both have lugs of similar shape but different lobes. Each of these similarities and/or differences benefit both the human and the mink, in their own unique way, with each structure having its own function. Overall, the mink is a very complex animal and so is an individual.
It protects the vulnerable neck from being harmed. The second major function that the frill provided was due to the fact that the frill contained a network of blood vessels on its underside, which were used as a means to get rid of excess heat. The Pachycephalosaurs were considered to be bipedal. They were also found to have thick skulls, flattened bodies, and tail that were covered in an array of body rods. Pachycephalosaurs were thought to have been more than fifteen feet long and processed a skull that was surrounded by a rounded dome of solid bone.
All primates have essentially the same kinds of specialized mammalian teeth adapted to eating a wide variety of foods. Beginning at the front, each quadrant of the mouth has 2 incisors, 1 canine, and varying numbers of premolars and molars. The incisors are used like scissors for nipping off pieces of food. The pointed canines are for piercing and tearing. The premolars and molars, with their cusps, are used to grind and smash food. In platyrrhine species, there are 3 premolars and 2 or 3 molars. This results in a dental formula of 2.1.3.2 or 2.1.3.3. In contrast, all of the catarrhines have 2 premolars and 3 molars, making a dental formula of 2.1.2.3. The chimpanzee shown below is an Old World anthropoid species and, therefore, has a catarrhine dental formula.
In the Grapes of Wrath, a novel by John Steinbeck, there are many examples of symbolism. One of the most prominent symbols found in this book is the turtle seen in chapter three. This turtle is symbolic of three things: the Joads and their journey west, Tom Joad himself, and the promise of new life. First, here’s a little background information on the turtle. This land turtle was somewhere to go. Where than is, no one knows, except perhaps John Steinbeck. To get there the turtle decides to take the perilous journey down a dusty dirt road that stretches along the quiet countryside. What could happen? A lot more than one might think. In fact, the turtle faces quite a few challenged ranging from pesky insects, to ledges, to even cars. But, the thing that makes this turtle special is that he never gives up (Pages
Throughout the animal kingdom, adaptations take place continuously and even the smallest of changes can leave a significant impact. Examples can be seen within any plant or animal. One example would include sea turtles, specifically, the Loggerhead Turtles. These turtles are native to the Indian, Atlantic, and Pacific Oceans as well as the Mediterranean Sea (Deurmit L 2007). They thrive in either temperate or tropical climates and can live in a myriad of biomes (Deurmit L 2007). These biomes include the pelagic, reef, coastal, and brackish water (Deurmit L 2007). Loggerhead turtles are omnivores and can eat anything from insects to aquatic crustaceans, to macro algae (Deurmit L 2007). According to Deurmit (2007) Caretta caretta is classified into Animalia Kingdom, Chordata Phylum, Vertebrata Subphylum, Reptilian Class, Testudines’ Order,
Within the state of Florida there are dozens of individualized, non-profit organizations making an effort to help the local wildlife. The local land and marine wildlife includes birds, geckos, frogs, snakes, panthers, manatees, sea turtles, fishes, sharks, corals, lizards and many, many more. Florida State is located on the Southeastern tip of the United States providing a unique opportunity for conservation of salt-water animals. While there are animal conservation efforts taking place all over the world, this essay will focus on two animal species that humans are specifically trying to save in Florida State. The two main animal species of focus are manatees and sea turtles.
The poem Mark O’Connor wrote “Turtles Hatching” at a time in his life when was closely studying nature.
The Texas horned lizard, Phrynosoma cornutum, is a species in the lizard family, Phrynosomatidae, which has ten genera and a diverse group of over 125 different species (Hammerson 2007; Cossel Jr. 1997). Lizards in this family can be found in Mexico, Panama, most areas of the United States and parts of Canada (Heying 2003). Phrynosomatids range in a variety of forms, but are most commonly distinguished by their small size (less than 10 cm long), rough and keeled scales, spikes on their bodies, and the fusion of the sides of their teeth to the sides of their inner jawbones, known as pleurodont teeth (Heying 2003). The thirteen species in the horned lizard genus, Phrynosoma, can be identified more specifically by their flattened bodies (similar to a toad), small and coarse dorsal scales, camouflaged markings, and a short head with two horns pointing towards their backs (Oklahoma 1996). Of all the Phrynosoma horned lizards, the Texas horned lizard has the largest body and is the most widely dispersed species (Wikipedia 2007).
In order for this breakdown to happen, the ‘tube’ through which the food travels requires assistance from a number of other digestive organs starting with the salivary glands, and later receiving
“Imagine walking on the beach at night, the sky completely full of stars. Suddenly you see this big dinosaur lumbering out of the sea—a 1,000-pound, 2-meter-long (450-kilogram, 6.5-foot-long) turtle. With incredible concentration, she uses her flippers to dig a huge nest in the sand."
Biodiversity is the variation and amount of species across the globe, or within in a specific geographical habitat. There are three different areas of study within biodiversity; ecological diversity, species diversity and, genetic diversity. Science Book Species diversity is the variety of different organisms and relationships within a specific species, this essay will discuss the declining of species diversity among sea turtles and the implications it has on the worldwide seas. I have chosen to research about the topic because, sea turtles are believed to have been alive during the Jurassic period. However, now all seven sea turtle species are critically endangered or vulnerable, due to human activities such as; commercial fishing, bycatch and, climate change. (WWF, OCEANA, ACTIONBIOSCI)
Introduction Caretta caretta, otherwise known as the Loggerhead Sea Turtle, is an oceanic turtle that exist throughout the globe. They are circumtropical species (LeBlanc et al. 2014) meaning they are distributed throughout temperate and tropical ocean regions, but most abundant species are found in the United States coastal range. Loggerheads largest nesting aggregations in the Atlantic are found along the southeastern United States coastal range where about 80% of all nesting occurs and 90% of all hatchlings are produced (Abecassis et al. 2013).
Fresh Water turtles are small, yet amazing creatures to have and care for in your home. River Cooters, Red Eared Sliders, and Painted turtles are all common pet’s found in America. Though turtles are fun to have around they do require special care just like any other pet would. In most cases they make great pets but turtles aren’t the easiest pets to have so depending on your lifestyle you should think about how much time you’re willing to put into a turtle. They are usually cheap to buy yet the equipment for your turtle can get expensive. Along with cost you must find the time to put into this pet. They need nice set ups to live in as well as attention and proper handling.
Reptiles are vertebrate, or backboned animals constituting the class Reptilia and are characterized by a combination of features, none of which alone could separate all reptiles from all other animals.The characteristics of reptiles are numerous, therefore can not be explained in great detail in this report. In no special order, the characteristics of reptiles are: cold-bloodedness; the presence of lungs; direct development, without larval forms as in amphibians; a dry skin with scales but not feathers or hair; an amniote egg; internal fertilization; a three or four-chambered heart; two aortic arches (blood vessels) carrying blood from the heart to the body, unlike mammals and birds that only have one; a metanephric kidney; twelve pairs of cranial nerves; and skeletal features such as limbs with usually five clawed fingers or toes, at least two spinal bones associated with the pelvis, a single ball-and-socket connection at the head-neck joint instead of two, as in advanced amphibians and mammals, and an incomplete or complete partition along the roof of the mouth, separating the food and air passageways so that breathing can continue while food is being chewed. These and other traditional defining characteristics of reptiles have been subjected to considerable modification in recent times. The extinct flying reptiles, called pterosaurs or pterodactyls, are now thought to have been warm-blooded and covered with hair. Also, the dinosaurs are also now considered by many authorities to have been warm-blooded. The earliest known bird, archaeopteryx, is now regarded by many to have been a small dinosaur, despite its covering of feathers The extinct ancestors of the mammals, the therapsids, or mammallike reptiles, are also believed to have been warm-blooded and haired.
First, we shall discuss the similarities these two creatures share. One of the most obvious similarities between these two animals is that they both have hair and are domesticated animals kept as pets. They require love and affection from their owner, and return that love and affection if owners show it towards them. Another thing is