MCQ
Photosystem is composed of
- ALight harvesting complex
- BReaction centre
- CAccessory pigments
- ✓More than one is correct
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$I.$ New leaves formation
$II.$ Chloroplast formation in leaves
$III.$ Lateral shoot formation
$IV.$ Adventitious shoot formation
$V.$ Rooting on stem cuttings
Choose the correct option
$(i)$ $RNA$ can directly code for the synthesis of proteins
$(ii)$ It is very common process to synthesis $DNA$ from $RNA$
$(iii)$ $RNA$ is used as genetic material only in human
$(iv)$ One polynucleotide chain is present in $RNA$
Reason : Oxygen started accumulating in the atmosphere after the non-cyclic pathway of photosynthesis evolved.