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In the Proterozoic, 2.5 billion years ago, but these were not advanced modern algea, but primitive Cyanobacteria. Cyanobacteria still exist today, but in their heyday, they were the dominant form of life on Earth, and may be been the first to form colonies. Over about 1 billion years, they produced the bulk of the free oxygen in our atmosphere, poisoning they own environment and setting the stage for modern plants and animals to take over.
We owe them our lives, for without them, all oxygen would be bound up in the rocks as it is on Mars.
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∙ 13y ago
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∙ 14y agoAlgae is a photosynthetic organism that used to be considered a plant but has been removed from that category because of its lack of roots, stems, and leaves. The evolution of photosynthesis took place approximately 2.5 billion years ago. This enabled sunlight energy to power metabolism. This process allowed organisms such as algae and cyanobacteria to exist and capture energy.
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∙ 11y agoThey didn't evolve. God created them, "after their kind" about 6,000 years ago.
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∙ 14y agoAlgae first appeared in the Precambrian Era. The Precambrian Era was 4.6 billion - 544 million years ago.
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∙ 12y ago425 million years ago.
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∙ 12y ago2015
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∙ 13y agoI was here!
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When did the first marine plants appear on earth?
the first plants appeared about 3000 years ago. the first plant was algae.
Why does algae appear green?
Because it contains chlorophyll - which has green pigment in it.
Why do plants and algae appear green?
They appear green because they have green pigment called Chlorophyll that is found in the Chloroplast in the cell.P.S. i am in the seventh grade!!
How do algae and fungi benefit each other?
first of all fungi and algae are two different kingdoms. many varieties from both kingdoms are edible so i guess that's your answer
Bleach kill algae?
Bleach will kill algae, but mix it with water first. it will also burn your skin
What were the first creatures to appear on earth?
well the first thing was algae...and formed from there on
When did the first marine plants appear on earth?
the first plants appeared about 3000 years ago. the first plant was algae.
What happened in 3 billion bc?
Those were the First signs of primeval life (bacteria and blue-green algae) appear in oceans.
Why does algae appear green?
Because it contains chlorophyll - which has green pigment in it.
Why do plants and algae appear green?
They appear green because they have green pigment called Chlorophyll that is found in the Chloroplast in the cell.P.S. i am in the seventh grade!!
What were the first plants on the planet?
The first plants were algae .
Did animal appear first or did plant appear first?
Scientists believe that animals evolved from single-celled organisms in the oceans around 600 million years ago, making them the first to appear. Plants, on the other hand, evolved from ancient algae and appeared on land around 450 million years ago.
What was the very first food on earth?
mushrooms, marine algae, freshwater algae, other botanicals
Does the Sea ever appear to be Pink?
yes, during "red tide" which is when a certain species of algae blooms.
How do algae and fungi benefit each other?
first of all fungi and algae are two different kingdoms. many varieties from both kingdoms are edible so i guess that's your answer
Algae the first group of flowers were?
angiosperms
What plant life evolved first?
algae
