‘Why did organisms need to move from one ocean to land?’ Animal World part 6

Hello friends in this article you are going to read about why organisms had to move from oceans to land, so if you are new to this blog I will recommend you to read our Animal World series.

 

So let’s go to the point when the life just occurred on our planet, the oceans provided the most conductive natural conditions for the occurrence of life. The dry land provided further opportunity for growth and development of life. In the process of evolution the movement of animals from water to land was a great milestone in this journey of life.

In the earliest stage of life single-celled organisms lived in water and then developed to multi-cellular organisms and became complex and complex. The first forms of life were plants like algae, mosses and lichens; these only provided the food which was required for animals in the water.

In some millions of years new forms of plant life developed. These plants had new feature like roots, stems and leaves, which made them organisms which could survive on land and mostly in wet, swampy areas on land.

When the food was there on land too, the animals gradually evolved in order to survive on land. The availability of food was the most important factor in movement of animals on land. The first animals to roam on land probably were worms and some other soft-bodied invertebrates. They were probably followed by some fishes that also evolved over thousands of years and developed limbs to walk and lungs to breathe and they were followed by reptiles that could live both in land and water, and as you know they are called amphibians.

 

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