Bot or Indian Banyan (ficus benghalensis, family: moraceae) is the largest canopy-holder tree of the world. It can spread up to 2000 feet of land. It is said by its scientific name that, this mammoth tree is native to the Great Bengal area (both Bangladesh and India) of Indian subcontinent.
Fruits are round fig. When ripe these turn to vivid red or orange. Fruits are eaten by the Common crow, Indian myna etc. These birds help the propagation of this tree.
The picture is taken from the premise of Bangla Academy, Dhaka University area
Aerial prop roots of ficus benghalensis