What is the term for the rhythmic contraction of the

Feni is made from

Which are of the following describes the characteristics of Sedges?

An extreme modification in the order Diptera, where hind wings are reduced to nubs used for balance and direction during flight is

Rice variety IR–36 belongs to the groups of:

Which soil type is formed under waterlogged conditions and exhibits bluish-grey mottling?

The Backcross method  of breeding is used to:

Urea contains: 

Photosynthesis cycle of C₃ plants is 

Match List I with List II:

Weed cause relatively more yield loss of rice when the crop is