What is the rank of India on 2017 Global Retirement

Name the famous Physiologist/Scientist associated with the study of loss of water from plant:

Which type of farming involves clearing tracts of land by burning, cultivating for a limited period, and then abandoning the land for a number of years?

Which reproductive structure in angiosperms contains the egg-bearing ovule?

Nucleic acids are:

In agricultural equipment, which component is primarily responsible for maintaining uniform seed rate in seed drills under varying field conditions?

In ecology, what does the term "niche" refer to?

Plants which flower only once in their life is:

“Regional Centre of International Rice Research Institute” is recently established in India at: 

Common smut of maize is caused by:

The goods those supply is less than demand & the goods those supply is greater than demand are called