Chanel Lawsuit Fashionphile, Harrow Recycling Centre Contact Number, Extreme Cheapskates Kate Hashimoto Where Is She Now, Nba Players From Proviso West High School, Articles S

l0Uh|T=(Y*/sScS,5?_\3S@ ,`dBRx!ji7h)Bn_OKh?AYK" }}>breM5CgO2*BJ=sN9uD {\J}"!>+(dkF? Exostles, jointed legs, and segmented bodies are all characteristics of arthropods. Similarities: 1.They are both insects. {FnZ~H>:lg{wt'~~]>l9V>V|3'(/E,$l|-_},ah"Xh&\ a:ZJ'0lx\0labnv`(lH``vA/c.qxpBVIB4Y0zDY ;Q`v3Te4}zUHp+hI0YE#|.oA$NC.m`d!&9kz;g 5dXHms1 4>zB4!fa?R0O>HL? Instead, they usually rely on camouflage, playing dead, or using mimicry a mechanism where they display a warning symbol, color, or behavior to intimidate a threat. Figure 2 - Hearts have adapted differently to best suit every animal. Meanwhile, while others keep the fertilized eggs inside their body until they are ready to hatch. A lifecycle is the different stages a plant or animal goes through during its life. Mammals are the only vertebrates that live on Earth. This page titled 40.3: Overview of the Circulatory System - Types of Circulatory Systems in Animals is shared under a CC BY-SA 4.0 license and was authored, remixed, and/or curated by Boundless. Legal. For some animals, such as the newt, there is a partial metamorphosis during which some of the aquatic characteristics are retained. Some reptiles have mechanisms that assist in their breathing. They all have special skin glands that produce proteins, and all of their skin cells can function as a filter for water and breathe. Fun Fact: Have you ever heard of the rare and endangered Tuatara? Insect bodies have openings, called spiracles, along the thorax and abdomen. The consent submitted will only be used for data processing originating from this website. A salamander has a backbone, is cold-blooded, needs a moist environment to live in, and can breathe. Some reptile females (like the bearded dragon) will then leave an egg clutch hidden somewhere on dry land. It is possible for a salamander to breathe through its skin. The circulatory system can then carry the oxygenated blood to the other parts of the body. The two atria (superior heart chambers) receive blood from the two different circuits (the lungs and the systems), and then there is some mixing of the blood in the heart's ventricle (inferior heart chamber), which reduces . The difference between an Amphibian and a Reptile is that an Amphibian has moist, smooth internal tissues and sticky mucus. The simplest animals, such as the sponges (Porifera) and rotifers (Rotifera), do not need a circulatory system because diffusion allows adequate exchange of water, nutrients, and waste, as well as dissolved gases (figure a). Reptiles and amphibians are distantly related to each other but in spite of some similarities, they can be distinguished by their physical appearance and different stages of life.. Amphibians live "double lives" one in water with gills and the other on land by growing lungs as they age. There are over 8,100 different types of amphibians in the world. 1 0 obj o E.g. Reptiles vs. Amphibians Differences Difference #1: Skin Difference #2: Respiratory System Difference #3: Reproduction Reptile vs. Amphibian Similarities Similarity #1: Ectotherm Similarity #2: Longevity Similarity #2: Defense Wrapping Up Reptiles VS Amphibians Reptiles vs. Amphibians Differences Amphibians Vs. Warm-blooded animals require the more-efficient system of four chambers that has the oxygenated blood completely separated from the deoxygenated blood. Gases like oxygen are able to pass through their permeable skin and into their capillaries. Legal. The advantage to this arrangement is that high pressure in the vessels pushes blood to the lungs and body. Click on the play button to start the video. October 17, 2013. The majority of all amphibians found in the United Kingdom are frogs and toads. The eggs of all amphibians are laid in water to keep them moist and are coated in a gelatinous substance that further protects them. Continue with Recommended Cookies. As a result, they are able to move, breathe, eat, and feel their surroundings at any time. As nouns the difference between insect and amphibian. Embryos are contained within soft and gel-like eggs and are considered to be anamniotic; They are laid in damp places or directly in the water surface. % The gills of some amphibians are preserved throughout their lives. The respiratory system of reptiles and amphibians are quite different. Fish, unlike amphibians, have gills and can only be born with them. Antarctica is the only continent where anambians and reptiles live without living on it. Which of these is a type of plant which is considered a bulb plant? They are vertebrates and cold blooded (ectothermic). A reptile, such as an alligator, a crocodile, a turtle, a snake, or a lizard, can be classified as a reptile. From where the eggs are laid to how theyre fertilized, reptiles and amphibian reproduction are quite different from one another. Is the Rhino beetle a mammal. The Class Reptilia is classified into four orders: The first amphibians have developed true legs and spent time on land after their early larval stage spent in water. The males sperm is placed inside the females body. amphibians thrive in warm, moist environments like this one. One of the most significant differences between amphibians and arthropods is that amphibians are tetrapods, meaning they have four legs, while arthropods are hexapods, meaning they have six legs. Live in aquatic environments during their larval stage but migrate to the land during adulthood. Describe the similarities between the life cycles of plants, mammals, birds, amphibians and insects. It includes life cycles of mammals, reptiles, birds, plants, amphibians and insects. Amphibians are born into the water with gills, but many of them develop lungs as they grow. They belong to different animal phyla because insects are arthropods and amphibians are chordates. There is some mixing of the blood in the heart's ventricle, which reduces the efficiency of oxygenation. Exchange of fluids is assisted by the pulsing of the jellyfish body. The structure of opsins is similar to parts of certain molecules in bacteria. This is a reptile that lives exclusively in New Zealand. The life cycle of an amphibian has three main stages (egg, tadpole, adult). If you bring to mind a picture of the lizard shaped salamander or the serpentine shaped caecilian (both amphibians) youll realize its not exactly that simple. You have entered an incorrect email address! If you do want a simple list to memorize all you need to know is that. Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. It is clear that amphibians and fish have the same anatomical and evolutionary characteristics. These slides will take you through some tasks for the lesson. An Overview Of Their Nutritional Benefits & Care, Can Bearded Dragons Get Blackheads? With hundreds of articles on everything pertaining to lizards, turtles, and snakes, our experienced team provides reliable and accurate content you can trust. Reptiles also shed their skin as they grow and continue to shed periodically throughout their adult life. As a result, a notochord is located at the spinal cords center, where it can move them around. Have them place amphibian characteristics on one side, reptile characteristics on the other, and shared characteristics in the middle where the circles overlap. Are insects. A salamander is a type of animal that can be found on land or in water. In this case, blood with a low concentration of oxygen molecules circulates through the gills. Most amphibians live in warm, damp climatesbut they do not have to live exclusively in water. A female mammal gives birth to her first child, which is a live young mammal. Neither reptiles nor amphibians have an aggressive defense system. Timing of limb development? OpenStax College, Introduction. As such, their respiratory systems reflect their natural habitat and preferred environments. Their stomachs, for example, have long horizontal scales that allow them to move across surfaces. These two classes have a lot in common, as previously stated. Other animal groups, such as reptiles, amphibians, fish, and insects, have hearts that look a little different . Insects, humans, and clams all use opsins and the history of human eyes can be traced through differences in the structure of these molecules. The backbones of reptiles and amphibians can be found in both reptiles and amphibians. However, the phylogenetic tree reveals that amphibians and reptiles are closely related to one another. To adapt to their new surroundings, amphibians must undergo a transformation from an aquatic animal to a terrestrial animal. 5o;`nl=j{{M8)yW. Of or relating to the amphibians Amphibia. OpenStax College, Biology. Investigation - observing over time. This unidirectional flow of blood produces a gradient of oxygenated to deoxygenated blood around the fishs systemic circuit. In fact, they feel dry and scaly to the touch. The world is witnessing a number of threats to reptiles, including habitat destruction, pollution, and overexploitation. This means insects have an exoskeleton while amphibians have an endoskeleton. frogs, toads, and salamanders are all amphibians, and biologists generally agree that they require water to survive. Similarities between amphibians and insects Tracer Bullet 10 subscribers Subscribe 93 views 1 year ago The video tries to help you understand simplistically the similarities between amphibians. This page titled 39.2: Systems of Gas Exchange - Skin, Gills, and Tracheal Systems is shared under a CC BY-SA 4.0 license and was authored, remixed, and/or curated by Boundless. { "39.01:_Systems_of_Gas_Exchange_-_The_Respiratory_System_and_Direct_Diffusion" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "39.02:_Systems_of_Gas_Exchange_-_Skin_Gills_and_Tracheal_Systems" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "39.03:_Systems_of_Gas_Exchange_-_Amphibian_and_Bird_Respiratory_Systems" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "39.04:_Systems_of_Gas_Exchange_-_Mammalian_Systems_and_Protective_Mechanisms" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "39.05:_Gas_Exchange_across_Respiratory_Surfaces_-_Gas_Pressure_and_Respiration" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "39.06:_Gas_Exchange_across_Respiratory_Surfaces_-_Basic_Principles_of_Gas_Exchange" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "39.07:_Gas_Exchange_across_Respiratory_Surfaces_-__Lung_Volumes_and_Capacities" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "39.08:_Gas_Exchange_across_Respiratory_Surfaces_-_Gas_Exchange_across_the_Alveoli" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "39.09:_Breathing_-_The_Mechanics_of_Human_Breathing" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "39.10:_Breathing_-_Types_of_Breathing" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "39.11:_Breathing_-_The_Work_of_Breathing" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "39.12:_Breathing_-_Dead_Space-_V_Q_Mismatch" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "39.13:_Transport_of_Gases_in_Human_Bodily_Fluids_-_Transport_of_Oxygen_in_the_Blood" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "39.14:_Transport_of_Gases_in_Human_Bodily_Fluids_-_Transport_of_Carbon_Dioxide_in_the_Blood" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()" }, { "00:_Front_Matter" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "01:_The_Study_of_Life" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "02:_The_Chemical_Foundation_of_Life" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "03:_Biological_Macromolecules" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "04:_Cell_Structure" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "05:_Structure_and_Function_of_Plasma_Membranes" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "06:_Metabolism" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "07:_Cellular_Respiration" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "08:_Photosynthesis" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "09:_Cell_Communication" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "10:_Cell_Reproduction" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "11:_Meiosis_and_Sexual_Reproduction" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "12:_Mendel\'s_Experiments_and_Heredity" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "13:_Modern_Understandings_of_Inheritance" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "14:_DNA_Structure_and_Function" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "15:_Genes_and_Proteins" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "16:_Gene_Expression" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "17:_Biotechnology_and_Genomics" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "18:_Evolution_and_the_Origin_of_Species" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "19:_The_Evolution_of_Populations" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "20:_Phylogenies_and_the_History_of_Life" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "21:_Viruses" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "22:_Prokaryotes-_Bacteria_and_Archaea" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "23:_Protists" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "24:_Fungi" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "25:_Seedless_Plants" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "26:_Seed_Plants" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "27:_Introduction_to_Animal_Diversity" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "28:_Invertebrates" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "29:_Vertebrates" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "30:_Plant_Form_and_Physiology" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "31:_Soil_and_Plant_Nutrition" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "32:_Plant_Reproductive_Development_and_Structure" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "33:_The_Animal_Body-_Basic_Form_and_Function" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "34:_Animal_Nutrition_and_the_Digestive_System" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "35:_The_Nervous_System" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "36:_Sensory_Systems" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "37:_The_Endocrine_System" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "38:_The_Musculoskeletal_System" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "39:_The_Respiratory_System" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "40:_The_Circulatory_System" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "41:_Osmotic_Regulation_and_the_Excretory_System" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "42:_The_Immune_System" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "43:_Animal_Reproduction_and_Development" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "44:_Ecology_and_the_Biosphere" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "45:_Population_and_Community_Ecology" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "46:_Ecosystems" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "47:_Conservation_Biology_and_Biodiversity" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()", "zz:_Back_Matter" : "property get [Map MindTouch.Deki.Logic.ExtensionProcessorQueryProvider+<>c__DisplayClass228_0.b__1]()" }, 39.2: Systems of Gas Exchange - Skin, Gills, and Tracheal Systems, [ "article:topic", "authorname:boundless", "showtoc:no", "license:ccbysa", "columns:two", "cssprint:dense", "licenseversion:40" ], https://bio.libretexts.org/@app/auth/3/login?returnto=https%3A%2F%2Fbio.libretexts.org%2FBookshelves%2FIntroductory_and_General_Biology%2FBook%253A_General_Biology_(Boundless)%2F39%253A_The_Respiratory_System%2F39.02%253A_Systems_of_Gas_Exchange_-_Skin_Gills_and_Tracheal_Systems, \( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}}}\) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash{#1}}} \)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)\(\newcommand{\AA}{\unicode[.8,0]{x212B}}\), 39.1: Systems of Gas Exchange - The Respiratory System and Direct Diffusion, 39.3: Systems of Gas Exchange - Amphibian and Bird Respiratory Systems, status page at https://status.libretexts.org, Describe how the skin, gills, and tracheal system are used in the process of respiration. You see, reptiles and amphibians both start their lives from eggs, but the rest of how they reproduce is, There are, however, a number of snakes who dont lay eggs at all and instead, Both reptiles and amphibians need to be kept warm, which is why heat lamps and heating pads are, If you bring to mind a picture of the lizard shaped salamander or the serpentine shaped caecilian (both amphibians) youll realize its, alligators and crocodiles are more different than you may think, 5 Must-Read Books About Snakes You Wont Be Able to Put Down, 3 Most Intelligent Reptiles That Could Outsmart Your Cat or Dog, The Ultimate Bearded Dragon Care Guide for Beginners, Small Pet Turtles: 6 Tiny Babies to Melt Your Heart, Ball Python Care Sheet: First-Time Owners Guide (Updated), Leopard Gecko Care Sheet: New Owners Guide, Ball Python Morphs With Pictures: The 50 MOST Popular. The thorax, abdomen, and head of all arthropods are distinct bodies. Science Activities. Scutes are boney plates. Because amphibians have moist, sticky skin, they are much more similar to insects than they are to reptiles. The LibreTexts libraries arePowered by NICE CXone Expertand are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. Once your account is created, you'll be logged-in to this account. In this lesson, we are going to learn about the differences in the life cycles of amphibians and insects. We can assist ourselves in understanding a variety of amphibious species by categorizing them into three distinct categories. Amphibians typically live in watery habitats and arthropods live in dry habitats. BioExplorer.net. Morphological changes: what are 1 similarity and 1 difference for each of the following? Some insects utilize a tracheal system that transports oxygen from the external environment through openings called spiracles. Fun Fact: Did you know that turtles can hold their breath for hours underwater with some of them able to hold their breath for as long as 4 to 7 hours? Both amphibians and arthropods are vertebrates, meaning they have a backbone. Cold-blooded vertebrates, such as a salamander, are born in water and grow their legs and feet on land. October 17, 2013. 4 0 obj Both reptiles and amphibians are some of the oldest species on earth, having originated over 300 million years ago!