Coenocytic condition is found in

The female sex organ in red algae is flask-shaped and is known as

Sexual reproduction in $Spirogyra$ is morphologically characterised by

The branch of botany that deals with the study of algae is known as:

Match the following columns:

Column-$I$	Column-$II$
$P$. Phaeophyceae	$I$. Red algae
$Q$. Chlorophyceae	$II$. Brown algae
$R$. Rhodophyceae	$III$. Green algae

How many of the following algae belong to the category of red algae?
Polysiphonia,Gelidium,Laminaria,Spirogyra,Porphyra,Fucus,Chlamydomonas,Polytrichum