A man can row upstream at 18 km/hr and downstream at 24

Which type of engine has one power stroke for every revolution of the crankshaft?

Consider the following statements regarding pest management in rice and choose correct options-

Water requirement of crops is the amount of water needed for:

Scientific name of Cowpea 

What method of propagation is commonly used in pineapple cultivation?

TRYSEM is related to ____

Microorganisms used for suppression of plant diseases are called as ____

Choosing nursery stock with higher levels of secondary plant compounds for resistance breeding would exemplify which plant resistance mechanism?

Polymorphism in fungi was first observed by:

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