From our Mock Paper-9
Q.32 Which among the following are the most
significant sources of primary production in most streams and rivers ?
1) Phytplanktons
2) Algae
3) Periphyton
4) Fungi
Codes:
A) 1,3,4
B) 2,3,4
C) 1,2,3
D) 1,2,3,4
Ans. C
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