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Difference Between Reptiles and Amphibians

Last Updated : 27 Feb, 2023
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Reptiles and amphibians, two different kinds of creatures, are commonly mistaken for one another because of their similar physical traits and behaviors. Yet, there are substantial differences between the two classes’ anatomy, habitats, and life cycles. These distinctions must be understood by anyone with an interest in the study or preservation of these fascinating species. This article will explore the differences between reptiles and amphibians, as well as their specific characteristics and ways in which they differ from one another.

What are Reptiles?

The phylum Chordata contains cold-blooded, air-breathing vertebrate creatures known as reptiles. With more than 10,000 species currently recognized, they are a diverse collection of animals that can be found everywhere but Antarctica. Reptiles differ from other animal classes in a number of ways that make them stand out.

Characteristics of Reptiles

Some of these characteristics include:

  • Scales: Reptiles have scaly, dry skin that acts as insulation and a barrier against moisture loss. They can have scales on their skin that are made of various substances, such as keratin or bone, and these scales aid in the animal’s defence against predators.
  • Lungs: The lungs of reptiles are more effective in drawing oxygen from the air than the gills of fish.
  • Cold-blooded: Ectothermic indicates that reptiles depend on their surroundings to maintain their body temperature because they are unable to regulate it internally.
  • Eggs: The majority of reptiles produce eggs with a tough, leathery exterior that protects and traps moisture for the developing embryo. Several snake species and other reptiles can store their eggs internally and give birth to live young.
  • Limbs: Nonetheless, certain species of reptiles have evolved to exist without limbs. Reptiles normally have well-developed limbs with claws or fingers that allow them to move readily on land.
  • Teeth: Certain reptiles have venomous fangs that assist them to subdue their food, and the majority of them have well-developed teeth that they utilize to grab and rend their prey.
  • Behaviour: Depending on the species, reptiles are typically lone animals that are active either during the day or at night.

What are Amphibians?

Cold-blooded, vertebrate species classified as amphibians are distinguished by their distinctive habitats and life cycles. They can be found all over the world in a variety of habitats, from deserts to tropical rainforests.

Characteristics of Amphibians

Here are some of the key characteristics of amphibians:

  • Moist Skin: Amphibians have smooth, moist skin, unlike reptiles, which enables them to breathe through their skin. Moreover, their skin is quite porous, allowing them to take in moisture and nutrients from the surroundings.
  • Life Cycle: The majority of amphibians change from a larval stage that breathes water to an adult stage that breathes air. They often shed their gills during this process and grow lungs, limbs, and other adult features.
  • Habitat: Although they can be found in a variety of terrestrial and aquatic settings, amphibians need moist surroundings to exist. Numerous animals live part of their life on land and part in the water.
  • Diet: The majority of amphibians consume tiny animals, insects, and other small invertebrates as their primary sources of food. Several larger species may also eat fish, rats, and other animals.
  • Reproduction: The majority of amphibians lay eggs, which are often placed in water or other damp areas. Larvae that breathe through gills and feed on microscopic creatures develop from the eggs. The larvae eventually transform into adults through metamorphosis.
  • Sensory Systems: Because of their acute hearing, smell, and vision senses, amphibians are able to locate prey, escape predators, and locate mates.
  • Adaptations: In order to survive in their settings, amphibians have developed a number of adaptations, such as sticky pads on their feet for climbing, camouflage to hide from predators, and toxins to protect themselves against them.

Difference Between Reptiles and Amphibians

Category

Reptiles

Amphibians

Skin Reptiles have dry, scaly skin that protects them from moisture loss and provides insulation. Amphibians have thin, permeable skin that allows them to absorb oxygen and water directly through their skin.
Habitat Reptiles are primarily terrestrial animals and are found in a wide range of habitats, including deserts, grasslands, forests, and aquatic environments. Amphibians are typically found near water bodies like streams, ponds, and wetlands, as they require moist environments to survive.
Reproduction Reptiles lay eggs that are covered with a hard shell, while most amphibians lay their eggs in water or damp environments without a protective shell.  The eggs of amphibians are usually jelly-like and do not have the hard protective outer layer like reptiles.
Limbs Reptiles generally have well-developed limbs that allow them to move easily on land. Some species of amphibians have reduced or absent limbs, making them more suited for movement in the water.
Metamorphosis Reptiles do not go through this process. Many amphibians undergo metamorphosis from a water-breathing larval stage to an air-breathing adult stage.
Teeth Most reptiles have well-developed teeth that allow them to grasp and tear their prey. Amphibians have weak, jaw-mounted teeth or none at all.
Behavior Reptiles are generally more active during the day, while many amphibians are nocturnal. Amphibians are known to congregate in large numbers during the breeding season.
Physiology Reptiles are able to tolerate higher temperatures and dry environments due to their ability to conserve water and regulate their body temperature. Amphibians are more susceptible to dehydration and require moist environments to survive.

Conclusion

The two separate classifications of creatures known as reptiles and amphibians exhibit many similarities as well as notable distinctions. Both groups of animals have scales and are cold-blooded, but reptiles are better suited for living on land due to their thicker, waterproof skin and more effective respiratory system. Nonetheless, due to their permeable skin and ability to breathe through it, amphibians are better suited to living in the water. Also, although reptiles develop directly from the egg to the adult, amphibians have a unique life cycle that includes a larval stage. Understanding these variations can help us to better appreciate the diversity of the natural world and act to protect these incredible beings.


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