Which one of the following shows isogamy with non-flagellated gametes?

Select the correct option from the given list regarding algal classes and their stored food materials:
$(1)$ Rhodophyceae - Pyrenoids
$(2)$ Phaeophyceae - Laminarin
$(3)$ Bryophytes - Mannitol
$(4)$ Chlorophyceae - Floridean starch

$A$ : Sexual reproduction shows considerable variation in the type and formation of sex cells in members of $Chlorophyceae$.
$R$ : It may be isogamous,anisogamous and oogamous.

Who is popularly known as the "Father of Phycology"?

In $Spirogyra$,sometimes the gametes behave directly as zygospores without fusion. Such reproductive bodies are called

Match the following columns:

Column-$I$	Column-$II$
$P$. Unicellular	$I$. Volvox
$Q$. Colonial	$II$. Chlamydomonas
$R$. Filamentous	$III$. Ulothrix and Spirogyra
$S$. Massive plant body	$IV$. Kelp