The organisms belonging to the class amphibia fall under the chordata phylum of the kingdom animalia. Extant species of reptiles are classified into three major subgroups. Reptilia is a class in the subphylum vertebrata of the phylum chordata, so they have all of the characteristics of both of these groups in addition to the following. Characteristics of a reptile many are eggbearing some bear live young breathe through lungs. The scales of reptiles, which develop from the epidermis the outermost layer of skin, are small, hard plates made of the protein keratin. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Class reptilia these animals are coldblooded, have scales and breathe through lungs. Class reptilia grade reptiles clade if you include aves a. Class reptilia includes 7,000 species of lizards, snakes, turtles and crocodilians. Pdf the original descriptions of reptiles researchgate. Phylum reptilia mcq multiple choice question and answer phylum reptilia mcq with detailed explanation for interview, entrance and competitive exams. Class reptilia includes many diverse species that are classified into four living.
Elongation of internal organs and often the loss of the left lung. Class reptilia is the group of animals known as the reptiles. Reptiles present a huge opportunity for a diverse conversation or. Currently, 301 species of reptiles are recognized in north america north of mexico.
Adaptations for terrestrial life amphibians are adapted to live on land parttime. They are vertebrates, which puts them in the same phylum as humans, dogs, cats, fish and many other animals. Classification of class reptilia reptile turtle scribd. Two pairs of limbs, each typically with 5 digits, ending in horny claws and suited to running, crawling or. Class aves kentucky department of fish and wildlife resources.
The function of these temporal fossae was probably to enable the jaw muscles to. Aug 10, 2017 class reptilia is the group of animals known as the reptiles. 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 through. The traits listed by lydekker in 1896, for example, include a single occipital condyle, a jaw joint formed by the quadrate and articular. 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. Apr 18, 2015 characteristics of a reptile many are eggbearing some bear live young breathe through lungs. Characteristics shared by all crocodiliansphysical cha racteristics both internal and external. Class reptilia biology 224 with lienesch at western.
Reptiles live in a wide range of habitats, including forests, swamps, grasslands, deserts, oceans, and mountains. Class reptiles is not a monophyletic group because traditionally it does not include birds. Are amniotes the egg has extra membranes that protect the embryo and prevent the embryo from drying out. All the organisms belonging to this class are poikilotherms. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that todays audiences expect. Some of the general characters of class amphibian are listed below. Animal kingdom classification system class 11 notes. Classification of reptilia zoology for ias, ifos and. The amniotic egg is different because they have four extra membranes.
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. They are exclusively aquatic organisms, truly jawed vertebrates. These are a diverse group of animals that are coldblooded and have or had scales. External structure dry thick, keratinized skinforms scales. Some of the general characters of class reptilia are listed below. General characters of class reptilia reptile anatomy scribd.
The study of these traditional reptile orders, historically combined with that of modern amphibians, is called herpetology. Although quite lizardlike in gross appearance, several unique features of the. In this article we will discuss about the general characters and classification of class amphibian the vertebrates with dual life. There are about 6,550 living species of reptiles worldwide. Class reptilia, mesozoic era, age of reptiles, early evolution of amniotes, characteristics of reptiles, terrestrial. Scutes, such as the shells of turtles and the armor of crocodiles, are similar in appearance and function to scales but are bony structures that form in a deeper layer of the skin, the dermis. Class reptilia definition of class reptilia by the free. Bones of the skull are loosely attached and not fused. Winner of the standing ovation award for best powerpoint templates from presentations magazine. 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. Pisces belong to the phylum chordata of the kingdom animalia. Body covered with dry cornified skin, usually with scales or scutes. Reptiles present a huge opportunity for a diverse conversation or lesson on reptiles and amphibians. Ppt class reptilia powerpoint presentation free to view.
Reptilia are two classes of animals that are grouped. For more information on class reptilia, its characteristics, and classification keep visiting byjus website or download byjus app for further reference. Yolk sac surrounds the yolk nutrients for embryo d. The members of the vertebrate class reptilia are tetrapods, meaning that they possess four limbs or are descended from fourlimbed ancestral forms.
Class reptilia body plan have a scale covered skin, and they have claws. General characters of class reptilia free download as powerpoint presentation. Habitat characteristics for this turtle in kentucky are largely unknown. These are multicellular vertebrates that live both on land and water.
Ectothermy allows them to survive using only 10% of the energy expended by mammals of similar size. Phylum reptilia objective type questions pdf download. Classification of reptilia zoology for ias, ifos and other. Correct description of organism prior to nomenclature. Reptiles first arose during the carboniferous, about.
To identify an animal as a reptile, it should have each of these characteristics. Download objective type questions of phylum reptilia pdf visit our pdf store. Amnion thin membrane enclosing the fluid in which the embryo floatsprevents drying out. May 10, 2010 an introductory presentation for my high school zoology course that examines the class reptilia. The class reptilia is broken into 4 orders and 48 families containing 10,450 species, as of august 2016. Laurenti 1768 for the inclusion of tetrapods that were. External structure ecdysismolting color for camouflage, mimicry and warnings. Class reptilia vertebrate zoology lecture notes docsity. The class reptilia has historically been defined as amniotes that are neither birds nor mammals, but this distinction is based largely on physical characteristics rather than phylogeny, i. 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.
Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. Reptiles are the creeping and burrowing cold blooded vertebrates bearing epidermal scales. The characteristics of the organisms present in class amphibia are. The characteristics of class reptilia are answer this multiple choice objective question and get explanation and result.
Even though most traditional models of classification will put birds in their own class, they. They are vertebrate animals like birds, mammals, and reptiles. While most of them have a threechambered heart, crocodiles have four heart chambers. The snakes and the lizards belong in the same order squamata and the turtles, crocodilians, and the single species of tuatara each have their own. Literature cited download all new 20 bird statewide maps 27 mb class aves american kestrel falco sparverius federal heritage grank srank grank srank status status simplified simplified n n g5 s5b,s g5 s5 5n gtrend decreasing gtrend breeding bird surveys show a significant decrease of 0. Class reptilia order crocodilia crocodiles, alligators, and gavials, 23 extant living species, enforced skull and massive jaw muscles, thedodont teeth, 4chambered heart, diverse group in the mesozoic, fossil forms up to 50 feet, up to 25 feet long today, lay eggs in nest, sex of young controlled by temps. Notice how birds somehow fall into this phylogenetic tree. Reptiles therefore identified as amniotes that are not birds 6. Grouping of organisms in to categories on the basis of. They exhibit important characteristics for terrestrial life keratinized scales, lungs, amniote egg, et al. In this article we will discuss about the classification of class reptilia. Reptiles are tetrapod animals in the class reptilia, comprising todays turtles, crocodilians.
They are the first cold blooded vertebrates from evolution point of view which came to the land. The living world class 11 notes pdf download for biology. The class reptilia includes the snakes, lizards, crocodiles, and turtles of the world. An introductory presentation for my high school zoology course that examines the class reptilia. The major groups of living reptiles are turtles, tuatara, lizards, snakes, and crocodiles. Class reptilia noun the noun class reptilia has 1 sense 1. Class aves kentucky department of fish and wildlife. Amphibians have a backbone and an internal skeleton made of bone.
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. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Classes of reptiles biology for majors ii lumen learning. There are over 9000 species in reptilia that snakes, lizards, crocodiles and include alligators, turtles and tortoises.
They are the first coldblooded animals to have appeared on land. Reptilia creeping includes animals which are cold blooded. Phylogenetic definition of reptilia systematic biology. The study of these traditional reptile orders, historically combined with that of modern amphibians, is called herpetology because some reptiles are more closely related to birds than they are to other reptiles e. There are almost 10,000 species of reptiles on the planet lumped into a single class known as reptilia. A class of vertebrates composed of turtles, lizards, snakes, crocodilians, amphisbaenians, and tuataras, as well as a variety of extinct forms.969 103 985 405 749 1308 1528 651 1247 1430 24 1671 226 739 1486 1435 769 44 182 554 1350 788 342 222 21 1355 33 1431 1163 76 337 1203 544 903