What should come in place of '?' in the given

What term describes the ratio between marketable crop yield and water used in evapotranspiration?

Which structure is a unique feature associated specifically with the Hymenoptera order and aids in wing coupling during flight?

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

A ridge on a seed formed by the fusion of the funicle to the seed coat is called:

Which of the following sequences is correct in terms of the Global Warming Potential?

Flumes are preferred for

Which of the following plants is an example of a biennial?

Sustained, extended deficiency in precipitation is called

Which is not a timber yielding tree species?

Which one among the following is a leguminous fodder?