Plants:
From Photosynthesis to Forests
TST Philosophy begins where we all stand: between reality and our ideas about it, seeking truth with humility and courage.
Wisdom Mix.
Here are 10 random key ideas and takeaways.
1.
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Red algae did not descend from green algae. Both lineages split from a shared ancestor about 1.5 billion years ago, then adapted independently to different light environments.
Subject: Plant Evolution.
Red and green algae diverged about 1.5 billion years ago, shaping marine ecosystems. Green algae later gave rise to land plants around 475 million years ago, transforming Earth’s surface and atmosphere. Fun fact: blue-green algae aren’t algae at all. They’re photosynthetic bacteria that emerged much earlier, around 2.7 billion years ago.
2.
From History: .
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Pollen evolved about 350 million years ago, by 130 million years ago, flowers improved pollination by attracting partners like bees.
Subject: Plant Evolution.
Evolution sometimes refines structure. Other times it rewrites strategy. About 130 million years ago, flowers evolved. It was the early Cretaceous, a time when a branch of evolution transformed seed-plant reproduction into enclosed ovules and eventually partnering with pollinators.
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From History: .
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Around 1.5 billion years ago, red and green algae diverged, establishing two major photosynthetic lineages from which all modern plants ultimately descend.
Subject: Plant Evolution.
Modern red and green algae share a common ancestor about 1.5 billion years ago. The green algae branch gave rise to plants about 475 million years ago. Before forests covered continents, before flowers colored landscapes, photosynthetic life was refining its chemistry in the oceans.
4.
From History: .
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Ginkgo represents an ancient seed-plant lineage going back 270 million years ago.
Subject: Plant Evolution.
Ginkgo represents an ancient seed-plant lineage going back 270 million years ago. It is distinguished by its fan-shaped leaves with radiating, dichotomous veins, a durable leaf architecture that has persisted for hundreds of millions of years.
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From History: .
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The modern coast redwood species is about 25 million years old, but its lineage reaches back roughly 100 million years into the age of dinosaurs.
Subject: Plant Evolution.
This coastal redwood species emerged about 25 million years ago during the Miocene era. The redwood lineage emerged during the age of dinosaurs about 95 million years ago.
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From History: .
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The Mesozoic era starts with the end-Permian mass extinction 252 million years ago. Dinosaurs ruled over all, including us. It ends the reign of dinosaurs with the K–Pg extinction 66 million years ago.
Subject: Evolution.
The Mesozoic era starts with the end-Permian mass extinction 252 million years ago ending the reign of our synapsid ancestors. Within it, it includes the end-Triassic extinction 201 million years ago and the Toarcian environmental crisis 183 million years ago. The Mesozoic era ends the reign of dinosaurs with the K–Pg extinction 66 million years ago.
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From History: .
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The Permian-Triassic extinction was not just the end of many species. It was a planetary reset that destroyed the old synapsid-dominated world and opened the door for the archosaur line that would later give rise to dinosaurs.
Subject: Evolution.
In Earth history, two great extinctions stand out. The P-T event 252 million years ago caused by global warming, and the K-Pg even 66 million years ago caused by a meteor. The dinosaur world did not appear because its ancestors were “better.” It emerged because of the Great Dying.
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From History: .
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About 1.55 billion years ago, bikonts evolved two flagella to pull themselves forward. These tiny rowboats led to all plants and is not an animal-fungi ancestor.
Subject: Plant Evolution.
By 1.55 billion years ago, bikonts evolved two flagella to pull themselves forward. These tiny rowboats eventually evolved into all plants. Plant cells ability to move was largely lost, but the legacy remains in the swimming sperm of primitive plants like mosses, which still pull themselves toward an egg.
9.
From History: .
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The Cenozoic era starts with the K–Pg extinction 66 million years ago. That event marks the sudden end of the reign of dinosaurs and the rise of mammals and birds.
Subject: Evolution.
The Cenozoic Era begins with catastrophe, but its story is really one of opportunity. When the K–Pg extinction struck 66 million years ago, it ended the age of non-avian dinosaurs and shattered ecosystems across the planet. Yet from that loss, mammals diversified into forms large and small, birds spread into skies and habitats once shared with pterosaurs, and flowering plants and grasslands reshaped the land.
10.
From History: .
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Prokaryotes are nucleus-free cells that include both bacteria and archaea — the two lineages that split shortly after LUCA.
Subject: Evolution.
“Prokaryote” is a structural description, not a single evolutionary branch. After LUCA, life divided into bacteria and archaea, and these prokaryotic lineages dominated Earth for billions of years before complex eukaryotic life emerged.
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Wisdom Builder
(c) 2025-2026 TouchstoneTruth.
Content and coding by Michael Alan Prestwood.
(c) 2025-2026 TouchstoneTruth.
Content and coding by Michael Alan Prestwood.
