Question

How do blue green algae photosynthesize?

Answer 1

Blue green algae (cyanobacteria) have folds on their external membranes that function in photosynthesis,

Explanation:

They produce oxygen as a by product and do not need it. These are actually a bacteria which are also called blue green algae. These are also thought to be where chloroplasts (found in plants) had their beginnings.

Toxic!