MCQ
Who proved first time that $DNA$ is a genetic material
- AJacob and Monad
- BAvery, Mcleod and McCarthy
- ✓Griffith
- DHarshey and Chase
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$a\quad\; b\quad\; c \quad\;d$
$I.$ use of biofertilisers and biopesticides
$II.$ crop rotation
$III.$ locally developed pest resistant varieties
Choose the correct option