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Question
Who of the following has given the term rhizosphere :
Options:
A .  Hiltner
B .  None of the given options
C .  Garret
D .  Alexopolus
Answer: Option A
Answer: (a)
Lorenz Hiltner is recognized as the first scientist to coin the term “rhizosphere” in 1904. The word is derived from the Greek word ‘rhiza’, meaning root, and ‘sphere’, meaning field of influence.
Hiltner defined the rhizosphere as the zone of soil immediately adjacent to legume roots that support high levels of bacterial activity.

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