Question

By what percentage of available moisture is easily extracted by plants?

(a) 80 to 90%

(b) 75 to 80%

(c) 70 to 80%

(d) 65 to 70%

This question was addressed to me during an interview for a job.

This interesting question is from Water Requirements of Crops topic in section Water Requirements of Crops of Irrigation Engineering

Answer 1

Correct choice is (b) 75 to 80%

To explain: Readily available moisture is that part of available moisture which can be easily extracted by plants and of 75 to 80% of available moisture.