When FSL of the canal is sufficiently below the bottom of the drain, so that water flows freely under gravity, such structures is called________?

The first ever inter generic crossed has been successfully performed between bamboo and sugarcane by________?

Which one of the following is the soluble vitamins________?

The sheet or small layer of water flowing over an ogee spillway is called ________?

Rhizosphere is:

The largest insect of the world________?