This marks the era of the Bikonts, the lineage that produced all modern plants and algae. These cells moved like tiny rowboats, using two flagella at the front of the cell to “pull” themselves through the water. Imagine a cell being towed by two microscopic proto-limbs. When plants later moved to land and became stationary, they largely retired these “pulling” motors, but the legacy remains in the rare swimming sperm of primitive plants like mosses, which still “pull” themselves toward an egg.
Author note.
Explore voice = Exploratory style. Very punchy. Personal, and lively using “me,” “you,” “us,” and “I” freely.
I want you to feel me right there with you. We use “I” and “me” and “us” without apology. If the Explain voice is a bridge, the Explore voice is the hike we take across it. It is lively, reflective, and sometimes a bit raw. It is the sound of a shared exploration where I lead you by the hand, but we both discover the view at the same time.
This is where I get to think out loud. Not with definitions, we aren’t just looking at the facts; we are looking at how they feel and what they mean for our lives. I’m talking to you about what I’ve found and what I’m still figuring out. It is engaging because it is real, and it is reflective because it is honest.
The goal is real advice and enjoyable reading. I want to land on something you can actually use. It’s about being direct, being punchy, and making sure that by the time we reach the end of the page, we’ve both found something worth keeping.
And now the piece.
Bikonts: Plant Ancestors Split Off Again (Front-Pull Pioneers)
~1.55 Billion Years Ago (+/- 5 million)
Two "Anterior" Flagella – plant rowboats
- Here's the key idea. 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.
- Finally, the core takeaway. 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.
That Science Story,
was first published on TST 2 months ago.
The flashcard inspired by it is this.
All this is part of the broader TST project.
Tidbits make it possible to build slowly and honestly, without losing track of where an idea came from.
Rather than publishing for immediacy, the TouchstoneTruth project releases one edition per week of the TST Weekly Column while allowing ideas to mature long before and long after publication.
The end!