In $Spirogyra$,during the germination of the zygospore,how many haploid nuclei take part in the formation of a new filament?

$A.$ Algae are known as primitive plants.
$R.$ The body structure of algae is simple.

The basal cell of $Ulothrix$ is known as:

Match the following columns:

Column-$I$	Column-$II$
$P$. Green Algae	$I$. Ulothrix,Spirogyra
$Q$. Red Algae	$II$. Gracilaria,Gelidium
$R$. Brown Algae	$III$. Ectocarpus,Sargassum

Fusion of morphologically dissimilar gametes,which may be motile or non-motile is known as:

Consider the following statements regarding reproduction in class-$Chlorophyceae$.
$I.$ Asexual reproduction is mainly by flagellated zoospores produced in zoosporangia.
$II.$ The sexual reproduction shows considerable variation in the type and formation of sex cells and it may be isogamous,anisogamous and oogamous.
Which of the statements given above are correct?