3 ms·

Well, the chloroplast was evolved when all life forms were submerged in the sea

• jacquesm 3y ago
  The sea is on the other side of a very carefully policed barrier.
  • geysersam 3y ago
    Still, it's less of a challenge to pump water from your roots if you're in the sea. Did the earliest green plants even have roots?
    • eru 3y ago
      > Did the earliest green plants even have roots? No. Not even all land plants have roots.