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Choose correct statement(s) about ''Azol...

Choose correct statement(s) about ''Azolla':
(I) Azolla is a free-floating water fern.
(II) Azolla fixes the atmospheric nitrogen in association with nitrogen fixing blue green alga Anabaena azollae.
(III) It is used as a bio-fertilizer for wetland rice cultivation.
(IV) Not suitable for rice crop.

A

I, II and III only

B

I and II only

C

I, II and IV only

D

II, III and IV only

Text Solution

Verified by Experts

The correct Answer is:
A, B, D
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Knowledge Check

  • A free living nitrogen fixing cyanobacterium which can also form symbiotic association with the water fern Azolla

    A
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    A
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    B
    Anabaena
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    Chlorella
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