What will be come in place of (?) in the given expressions.

The national flower of India, which also has religious and ornamental significance, is:

What is the empirical relation between mean median and mode in positively skewed frequency distribution?

For inducing the germination stratification is practised in seeds of 

The rate of decrease of temperature with height is known as:

Which of the following insect orders contains species that are exclusively parasitic in behavior?

Most suitable soil for groundnut cultivation is    

The structure within the haustellate mouthparts forming a protective cover over the stylet bundle in piercing-sucking insects is the:

Which vegetable is grown by transplanting seedlings: 

What is the name of Downey mildew genus,  in which secondary and tertiary branches are formed at right angles? 

India is largest producer and consumer of which agriculture commodity?