In the members of Phaeophyceae,which part of the body functions as the photosynthetic part?

Select the wrong statement.

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

Match the following columns:

Column-$I$	Column-$II$
$P$. Chlorophyceae	$I$. $2$, unequal lateral flagella
$Q$. Phaeophyceae	$II$. Flagella absent
$R$. Rhodophyceae	$III$. $2-8$, equal apical flagella

In $Spirogyra$,which of the following statements is correct?

Which method of sexual reproduction is observed in the alga shown in the given figure?