The optimal dissolved oxygen levels required for prawn culture in the ponds:

(a) 2 to 3 ppm
(b) 5 to 7 ppm
(c) 1 to 2 ppm
(d) 0 to 3 ppm

Anurag Mishra Professor Asked on 28th May 2016 in Biology.
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    Answer: (b) 5 to 7 ppm

    Anurag Mishra Professor Answered on 30th May 2016.
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