STD 12 - 6. evolution — BIOLOGY STD 12 Science — Question

$i. \;RNA\; polymerase \;I \;transcribes \;rRNAs$.

$ii. \;RNA \;polymerase \;II \;transcribes \;snRNAs.$

$iii. \;RNA \;polymerase \;III \;transcribes \;hnRNA.$

$iv. \;RNA \;polymerase \;II \;transcribes \;hnRNAs.$

$(i)$ Differentiation of megaspore mother cells

$(ii)$ Meiosis of the megaspore mother cell

$(iii)$ Formation of a linear tetrad

$(iv)$ Mitotic division of the functional megaspore

$(v)$ Degeneration of 3 megaspores

$(vi)$ Formation of embryo sac

$(vii)$ Fusion of polar nuclei

The correct sequence is