Cyanobacteria :Cyanobacteria or blue-green algae are gram(+ve) photosynthetic prokaryotes known to be the earliest colonisers of barren area because of their ability to perform oxygenic photosynthesis. Cyanobacteria contains chlorophyll a, carotenoids and phycobilins as photosynthetic pigments.
Food is stored in the form of cyanophycean starch, lipid globules and protein granules.
They have evolved more than 3 billion years back, added oxygen to the atmosphere and paved the path for evolution of aerobic forms, including aerobic bacteria.
No comments:
Post a Comment