Which characteristic indicates that two species of algae are closely related?

Isogamous condition with non-flagellated gametes is found in:

In algae,the photosynthetic pigments are present in

Who is known as the Father of Modern Phycology in India?

Which of the following statements are applicable to brown algae?
$(I)$ They contain pigments like chlorophyll $a$,chlorophyll $c$,carotenoids,and xanthophylls.
$(II)$ They vary in color from olive green to various shades of brown.
$(III)$ Food is stored as complex carbohydrates,in the form of laminarin or mannitol.
$(IV)$ The cell wall is composed of cellulose and algin.
$(V)$ The cell wall is covered on the outside by a gelatinous coating of algin.

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