MCQ
In $40\;\%$ angiosperms, the pollen grains are shed at
- AFour-celled stage
- ✓Three-celled stage
- CTwo-celled stage
- DFive-celled stage
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$B$ - In pteridophyte gametophyte is multicellular,short lived and haploid
$\begin{array}{|l|l|} \hline Column\;-I & Column\;-II \\ \hline A.\;Micro\;filament & i.\;Glycokalyx \\ \hline B.\;Micro\;tubule & ii.\;Actin \\ \hline C.\;Flagella & iii.\;Tubulin \\ \hline D.\;Outer\;layer\;of\;bacteria & iv.\;Outer\;compartment \\ \hline \end{array}$