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Veterbrates: Fish and Amphibians

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by

Alex Corsan

on 20 December 2010

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Transcript of Veterbrates: Fish and Amphibians

Fish and amphibians Fish Fish have a head, trunk and a tail Their body is covered in tiny scales Fish live in water and use their fins to swim Fish breathe through gills located on the sides of their heads Fish are oviparous, female fish lay eggs in the water
Baby fish are born from the eggs Fish groups There are two groups of fish 1. Bony fish They have skeletons made of bones. Their habitats are the sea, rivers and lakes. 2 examples of bony fish sardines salmon 2.Cartilaginous fish Their skeletons are made of cartilage They live in the sea One example Shark Amphibians Amphibian groups Amphibians have a head, trunk and limbs Some have tails They can live on land but stay in, or near, water. Amphibians are oviparous They female lay eggs in ponds or rivers. As young amphibians grow, their appearance changes Amphibians are classified into 2 groups 1. Amphibians without tails For example frogs Characteristics:
Wide body
Long, strong back legs for jumping
They catch their prey(food) with
a long tongue 2. Amphibians with tails For example salamanders Characteristics:
Long body, and four limbs
All four limbs are the same length
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