MCQ
A flattened disc-like sac in a chloroplast is called a
- ALoculus
- ✓Thylakoid
- CStroma
- DMargin
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$I.$The portion of the spectrum between $300-500 \;nm$ is also referred to as Photosynthetically Active Radiation $(PAR)$.
$II.$ Magnesium, calcium and chloride ions play prominent roles in the photolysis of water:
$III.$ In cyclic photophosphorylation, oxygen is not released (as there is no photolysis of water) and $NADPH$ is also not produced.