The largest unicellular plant,$Acetabularia$,belongs to which of the following groups?

The stored food in Polysiphonia is:

An alga which exhibits a diplontic life cycle is

$A$ research student collected a certain alga and found that its cells contained both chlorophyll $a$ and chlorophyll $d$,as well as phycoerythrin. The alga belongs to:

Match the following columns:

Column-$I$	Column-$II$
$A$. Blue-green algae	$i$. Spirogyra
$B$. Unicellular algae	$ii$. Nostoc
$C$. Filamentous algae	$iii$. Volvox
$D$. Colonial algae	$iv$. Chlamydomonas

Which photosynthetic pigment is $NOT$ found in algae?