Question
Which of the following historic events occurred first? pick one answer
Bryophytes become the first land plants
Cyanobacteria become the chloroplasts of plants
plants evolve vascular tissue
Cyanobacteria began to photosynthesize
Bryophytes become the first land plants
Cyanobacteria become the chloroplasts of plants
plants evolve vascular tissue
Cyanobacteria began to photosynthesize
Answers
GPT-4o mini
The event that occurred first is **Cyanobacteria began to photosynthesize**. This process laid the foundation for the development of oxygen-producing life forms and ultimately led to the evolution of plants.