MCQ
Which is true
- A$ABA $ open stomata
- B$ABA$ and cytiokinin does not effect on stomata
- C$ABA$ open, cytokinin close stomata
- ✓$ABA $ close and cytokinin open the stomata
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$a$ - animal, $b$- viroids, $c$-bacteria $d$ - virus, $e$ - algae.
$R$ : They act on all trophic levels of a food chains.