Select the number from among the given options that can

The scientist who initiated cloud seeding experiments using silver iodide was

All of the following curves are U-shaped except: 

Leaf curl disease of cotton is due to 

Range is the measure of difference between

In which type of market does the exchange of commodities take place on a specified future date?

In which group are sucking mouthparts not found?

Which of the following is a true bulb used in floriculture?

Which of the following irrigation efficiencies indicates the proportion of applied water that is stored in the root zone of crops?

Consider the following statements in reference to cross pollinated crops.

Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R):