Wednesday, April 8, 2015

Comparison between Amphibians and Reptiles

Differences between 
Amphibians and Reptiles

Image result for frog and snake


Features
Amphibians
Reptiles
Group
They come under class Amphibia
They come under class Reptilia
Habit and habitat
They usually stay near water sources to prevent drying out, and have smooth skin.
They are groups of animals that breathe air, have scales on their bodies, and lay eggs.
Breathing
Gills, skin and lungs
Lungs
Metabolism
Ectothermic (Poikilothermic or cold-blooded)
Ectothermic (Poikilothermic or cold-Blooded)
Metamorphosis
Yes. Breathes water through gills until it develops lungs.
No. Looks like a miniature adult when born.
Heart
3-chambered.
Two atria and one ventricle
3-chambered, two atria and one ventricle. But ventricle is partially divided.
Crocodiles have 4-chambered heart.
Limbs
Short fore- limbs and long hind limbs. They are generally pentadactyl (with five webbed digits).
Four limbs are present (except snakes).
Skin
Smooth, moist, rather sticky skin. Mucous glands are present.
Dry and scaly. Scales are made of keratin. Skin is found underneath the scales.
Eggs
Soft gel surrounding their eggs without any hard covering. Usually found in water or damp places.
Amniotic egg. Have hard, leathery eggs laid on land or they keep eggs in their bodies until they hatch.
Reproduction
Sexual. External fertilization
Sexual. Internal fertilization
Examples
Frogs, toads, newts, salamanders, caecilians or blindworms etc
Snakes, lizards, crocodiles, turtles etc



1 comment:

  1. Thanks for your explanation between reptiles and amphibians. Most people would just classify them all as "creepy crawlies" and leave it at that. You also make some good points about what their habitat needs will be if you decide to buy amphibians or snakes as pets. Amphibians will need a constant source of clean water to stay healthy. Thanks for your post. http://snakesatsunset.com/amphibians-for-sale/

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