MCQ
Planktons are organisms which
- ✓Float on water surface
- BAre free swimmers
- CAre deep sea forms
- DAre burrowing forms
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$I$.In $C_{4}$-plants, the primary $C O_{2}$ acceptor is $P E P$.
$II$. In the photosynthetic process, PS-II absorbs energy at or just below $680 \;nm$.
$III$. The pigment that is present in the Pigment System-$I$ is $P$ $680$ .