MCQ
In gymnosperms, the ovule is naked because:
- APerianth is absent.
- ✓Ovary wall is absent.
- CInteguments are absent.
- DNucellus is absent.
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$\begin{array}{|l|l|} \hline Col\,\,A & Col\,\,B \\ \hline 1.\,\,Species & P.\,\,Solanum \\ \hline 2.\,\,Genus & Q.\,\,Leo \\ \hline 3.\,\,Family & R.\,\,Polymoniales \\ \hline 4.\,\,Order & S.\,\,Felidae \\ \hline \end{array}$
$(1)$ $Z$ shape is formed when all the carriers are placed in a sequence on a redox potential scale.
$(2)$ The $4e^-$ released are accepted by various electron acceptors and finally enter into $PS-II$ instead of returning to $PS-I.$
$(3)$ In this process both $PS-I$ and $PS-II$ take part
$(4)$ As the electrons released in various ways do not return to their original donors, such an electron transport is called non-cyclic electron transport.