What is the main difference between flowering and non-flowering plants?

Match the following columns:

Column-$I$	Column-$II$
$A$. Christmas tree	$i$. Bennettites
$B$. Fossil plant	$ii$. Cycas
$C$. Ornamental plant	$iii$. Araucaria
$D$. Tallest tree	$iv$. Sequoia
	$v$. Thuja

$(i)$ Selaginella and Salvinia are heterosporous plants.
$(ii)$ The gametophyte of pteridophytes is called a prothallus.
$(iii)$ In Cycas,stems are unbranched.
$(iv)$ Gymnosperms are heterosporous.
How many statement$(s)$ is/are correct?

Which one of the following plants is monoecious?

From an evolutionary perspective,which of the following represents the most advanced form?

$A$ fungus contains cells with two nuclei from different genomes. The nuclei do not fuse but divide independently and simultaneously as new cells are formed. It belongs to