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Plant Evolution - Papers

Plant Evolution

A long 3000 million years ago the earth was not suitable for life as the atmosphere contained little to no oxygen and without this, deadly ultra violet rays from the sun bombarded the unprotected surface. This lead to life beginning in the ocean where it was safe from the sun's rays. It was here that life began with bacteria and small microscopic plants, called algae. Algae is the worlds oldest known fossil. Found in rocks of South Africa and Central Australia up to 3100 years ago. The Age of Algae lasted more than 2000 million years old, which is about half of planet earth's lifetime. During this long period of time, some of the algae developed the ability of being able to make food by ...

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became tree-like and up to 40 meters tall, forming the world's first forest.
'The Age of Seed Bearing Plants' was the next stage of plant history where plants were taken to their next step up in the evolution. This occurred around 280 million years ago. This was also the dinosaur era. Earth began to become a lot drier, and these plants began to adapt to the ever so changing climate. These plants developed the ability to produce seeds to reproduce their new generations. The advantages of this was that these seeds were able to survive dry periods, even long droughts and then germinate and grow when moisture became available.
Last but not least we have 'The Age of Flowering plants' beginning just over 100 years ago this was the fourth and last leap forward in the development of the world's plants. Unlike flowering plants cycads and conifers relied on winds to dispense pollen from male to female cones, the flowering plants attracted insects and birds to move pollen from males to ...

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Plant Evolution. (2004, February 3). Retrieved December 22, 2024, from http://www.essayworld.com/essays/Plant-Evolution/2496

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"Plant Evolution." Essayworld.com. February 3, 2004. Accessed December 22, 2024. http://www.essayworld.com/essays/Plant-Evolution/2496.

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PAPER DETAILS

Added: 2/3/2004 06:13:40 PM
Category: Science & Nature
Type: Premium Paper
Words: 832
Pages: 4

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