April 16, 2012 hourlybook 2

There are fossil records of blue green algae (Cyanobacteria) living 3000 million years ago and many eukaryotic organisms have existed for more than 1000 million […]


April 11, 2012 hourlybook 0

In Algae the plant body shows no differentiation into root, stem or leaf or true tissues. Such a plant body is called thallus. They do […]