Home / MCQs / Biology MCQs / The simplest of oxygen-producing photosynthetic organisms are? The simplest of oxygen-producing photosynthetic organisms are? Published on February 7th, 2020 - Leave a comment The simplest of oxygen-producing photosynthetic organisms are (a) Algae (b) Cyanobacteria (c) Bacteria (d) Chalmydomonas Subscribe to brighten your futureAn email was just sent to confirm your subscription. Please find the email and click 'Confirm Follow' to start subscribing. Email Address Subscribe Related