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

Identify the algae shown in the given diagrams $(a)$,$(b)$,$(c)$,and $(d)$.

$Chlamydomonas$,$Volvox$,$Ulothrix$,$Spirogyra$ and $Chara$ are examples of:

Consider the following statements:
$I.$ In red algae,vegetative reproduction takes place by fragmentation.
$II.$ In red algae,the food is stored as floridean starch,which is very similar to amylopectin and glycogen in structure.
$III.$ The cell wall of red algae consists of chitin.
Which of the statements given above are correct?

Food is stored as floridean starch in Rhodophyceae. Mannitol is the reserve food material of which group of algae?

Sexual reproduction in $Spirogyra$ can be described as: