NEET Botany Biological Classification Questions Solved

Azolla increases soil fertility of

(1) maize

(2) barley

(3) rice

(4) wheat

Audio Explanation:

(3) Azolla pinnata is a free floating fresh water fern which multiplies rapidly, doubling every 5-7 days. It can coexist with rice plants because it does not interfere with their growth. So  in many countries rice fields  are regularly provided with Azolla.

Difficulty Level:

  • 19%
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  • 54%
  • 12%
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