Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Characteristics of reptiles a variety of body shapes that are covered with scales and plates for protection against desiccation and. Though we edit our accounts for accuracy, we cannot guarantee all information in those accounts. In this lesson, well explore the reptile class, discover what other animals are reptiles, what makes them related, and why they are important. Squamata is the most diverse of reptiles with about 7,500 species. They are coldblooded animals found in most of the warmer regions of the world.
Notice how birds somehow fall into this phylogenetic tree. Phylogenetic definition of reptilia systematic biology. Birds are bipedal feathered and warm blooded homoiothermous animals i. Reptile, any member of the class reptilia, the group of airbreathing vertebrates that have internal fertilization, amniotic development, and epidermal scales covering part or all of their body. The class reptilia, or reptiles, traditionally included a diverse group of animals. Amnion thin membrane enclosing the fluid in which the embryo floatsprevents drying out. Reptiles therefore identified as amniotes that are not birds 6. What are differences and similarities between a class. There is a lot of color variation in both sexes and the color can change with temperature, surroundings. Apr 04, 2020 reptile, any member of the class reptilia, the group of airbreathing vertebrates that have internal fertilization, amniotic development, and epidermal scales covering part or all of their body. Information about class reptilia in the dictionary, synonyms and antonyms. These are creeping and burrowing terrestrial animals with scales on their body. Reptiles have the following distinctive characteristics that put them in the class of reptiles. External structure dry thick, keratinized skinforms scales.
General characters of class reptilia reptile anatomy scribd. A free powerpoint ppt presentation displayed as a flash slide show on id. Class aves blackthroated green warbler dendroica virens federal heritage grank srank grank srank status status simplified simplified n n g5 s4b g5 s4 gtrend stable gtrend the breeding bird survey shows a significant increase of 1. Being tetrapods 4 limbs that facilitate moving about on land. Proper usage and audio pronunciation of the word class reptilia. Class reptilia excludes birds, which descended from most recent common ancestor of reptiles 4. Reptile, any member of the class reptilia, the group of airbreathing vertebrates that have internal fertilization, amniotic development, and.
Reptilia creeping includes animals which are cold blooded. Classification of reptilia zoology for ias, ifos and other. Ppt class reptilia powerpoint presentation free to view. The dermal bones form a complete roof over the skull. These are a diverse group of animals that are coldblooded and have or had scales. What is the science of naming and grouping organisms called. Class reptilia is the group of animals known as the reptiles. Characteristics chuckwallas can reach a length of 16 inches, almost half of which is its tail. Adaptations for terrestrial life amphibians are adapted to live on land parttime. Most have paired limbs with five toes except snakes. Learn vocabulary, terms, and more with flashcards, games, and other study tools.
Class aves kentucky department of fish and wildlife. Reptiles are coldblooded vertebrates, breath by lungs and having the body covered by scales or scutes. Characteristic features of class reptilia online science. Class reptilia cincinnati zoo and botanical garden. They are the first coldblooded animals to have appeared on land. A useful scientific name must have two characteristics. Hair is a typical mammalian feature, although in many whales it has disappeared. Classification of reptilia zoology for ias, ifos and. In 1895, herpetologists separated reptiles from amphibia. Divers, in small animal endoscopy third edition, 2011. Hello im tithi modak i have discussed in this video the characteristics and classification of class reptilia with examples. The organisms belonging to the class amphibia fall under the chordata phylum of the kingdom animalia. Adw doesnt cover all species in the world, nor does it include all the latest scientific information about organisms we describe.
A basioccipital bone is present in the skull which articulates with the. All the articles you read in this site are contributed by users like you, with a single vision to liberate knowledge. College of agricultural sciences and natural resources university of tennesseeknoxville goal of the lecture to familiarize students with the origin and evolution of amphibians and the characteristics of the class and extant orders ofamphibia reading assignments. Characteristics of class reptilia is an online article publishing site that helps you to submit your knowledge so that it may be preserved for eternity.
Class reptilia excludes birds, which descend from most recent common ancestor of reptiles 4. Members of this class exhibit one of the most beautiful and visually stunning features such as bright and contrasting colours, unique patterns and a wide variety of striking poses. Though variation exists in reptiles, there are a few physical traits that unite them. The body varies in form and structure which may be short and broad or long and narrow, depressed or cylindrical. Amphibia refers to double life, or life in water and on land includes the salamanders, frogs, toads, and caecilians with approximately 3,900 spp. General characters of class reptilia free download as powerpoint presentation.
Reptilia is the class of backboned animals comprising living crocodiles, alligators, gavials, lizards, snakes, turtles, tortoises. A definition for reptilia that is less sensitive to changing tree topologies is clearly desirable, especially one that retains the spirit of traditional concepts for reptilia e. Class reptilia the upper part of the skull of reptiles is modified giving the reptiles a far more efficient and powerful jaw action and making the skull light. The class reptilia the reptiles class reptilia exploring nature. Though they do not look similar, there are some basic characteristics. Class reptilia definition of class reptilia by the free. The class reptilia includes the snakes, lizards, crocodiles, and turtles of the world. Unanswered questions which was not a result of the baby boom that followed world war ii answers apex.
The limbs are directed outward and the animals creep on their belly. Class reptilia body plan have a scale covered skin, and they have claws. Options a body covered with dry and cornified skin, scales over the body are epidermal, they do not have external ears b body covered with moist skin which is devoid of scales, the ear is represented by a tympanum, alimentary canal, urinary and reproductive tracts open into a common cloaca. Class reptilia, mesozoic era, age of reptiles, early evolution of amniotes, characteristics of reptiles, terrestrial. The class reptilia the reptiles class reptilia include turtles, snakes, alligators, and lizards. Many scientists believe that birds also belong in this class. Nov 21, 2017 reptilia, presented as a class in our classification, includes turtles testudines, snakes and lizards lepidosauria, crocodiles and their relatives crocodilia, and birds aves, as well as a.
The reptiles class reptilia include turtles, snakes, alligators, and lizards. There are two pairs of pentadactyl limbs, each with 5 digits bearing horny claws. In fact, all these animals are classified as reptiles. The class reptilia consists of more than 7000 species, including about 250 species of turtles, tortoises, and terrapins belonging to order chelonia, 2500 species of snakes in the suborder serpentes, and 4500 species of lizards in the suborder sauria snakes and lizards are combined to form the order squamata. In this article we will discuss about the characters and classification of reptilia. Some of the general characters of class aves the birds are listed below. The reptiles are classified mainly on the structure of their skulls, in which there are temporal vacuities or fossae or empty spaces in the temporal region. Reptiles are the creeping and burrowing cold blooded vertebrates bearing epidermal scales.
The characteristics of the organisms present in class amphibia are. A basioccipital bone is present in the skull which articulates with the vertebral column by a single condyle. Class reptilia these animals are coldblooded, have scales and breathe through lungs. Reptilian skull types, illustrated by the skulls of characteristic genera from colbert, 1969. Elongation of internal organs and often the loss of the left lung. Following are the important characteristics of the animals belonging to class reptilia. Some of the general characters of class reptilia are listed below. These are multicellular vertebrates that live both on land and water. The animal diversity web is an educational resource written largely by and for college students. May 10, 2010 an introductory presentation for my high school zoology course that examines the class reptilia.
Reptiles have scales on their bodies and have a dry skin. Characteristics shared by all crocodiliansphysical cha racteristics both internal and external. The two halves of the lower jaw are joined by a ligament, and each is. Mammal, class mammalia, any member of the group of vertebrate animals in which the young are nourished with milk from special mammary glands of the mother. In this lesson, well explore the reptile class, discover what other animals are. The study of these traditional reptile orders, historically combined with that of modern amphibians, is called herpetology. What are differences and similarities between a class reptilia and a clade reptilia. If they lay eggs some give live birth, the eggs are amniotic and have a shell that allows them to develop in a manner less reliant on water than amphibians.
The function of these temporal fossae was probably to enable the jaw muscles to. During some period of their life cycle, chordates possess a notochord, a dorsal nerve cord, pharyngeal slits, an endostyle, and a postanal tail. The amniotic egg is different because they have four extra membranes. Reptiles are tetrapod animals in the class reptilia, comprising todays turtles, crocodilians, snakes, amphisbaenians, lizards, tuatara, and their extinct relatives. Bones of the skull are loosely attached and not fused. Aug 10, 2017 class reptilia is the group of animals known as the reptiles. Reptilia, presented as a class in our classification, includes turtles, snakes and lizards lepidosauria, crocodiles and their relatives crocodilia, and birds, as well as a number of extinct groups. There are almost 10,000 species of reptiles on the planet lumped into a single class known as reptilia.
Testudines tortoises and turtles, crocodylia alligators and crocodiles, rhynchocephalia tuatara, and squamata. Even though most traditional models of classification will put birds in their own class, they. The class reptilia reptiles class reptilia include. Characteristics of reptiles a variety of body shapes that are covered with scales and plates for protection against desiccation and injury. They are vertebrates, which puts them in the same phylum as humans, dogs, cats, fish and many other animals. All reptiles, including snakes, turtles, crocodiles, and lizards, are equipped with airbreathing lungs, though different kinds of reptiles employ different means of respiration. Class reptilia vertebrate zoology lecture notes docsity. They show courtship, parental care, nest building, and territorial behaviour. Spec is for questions 23, write the letter of the correct answer on the line at the left.
The major groups of living reptiles are turtles, tuatara, lizards, snakes, and crocodiles. Snakes and lizards are in class reptilia, order squamata. One of the most important characteristics of animals is how efficiently they gather and utilize oxygen, the molecular fuel that powers metabolic processes. The upper part of the skull of reptiles is modified giving the reptiles a far more efficient and powerful jaw action and making the skull light. Extant species of reptiles are classified into three major subgroups. Reptilia definition is a class of vertebrata comprising airbreathing animals that have lungs but never gills, usually a threechambered heart, two aortic arches from which the systemic arteries arise, a bony skeleton in which the skull articulates with the vertebral column by a single occipital condyle, the vertebrae gastrocentral, and the compound mandible articulate with the skull. Activity is regulated by the temperature of the environment. What are the characteristics of the class reptilia answers. An introductory presentation for my high school zoology course that examines the class reptilia.
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