Which of the following organisms is unicellular?

Select true statements from the followings $:-$
$(i)$ Aristotle used morphological characters to classify plants.
$(ii)$ Two kingdom classification was proposed by Linnaeus.
$(iii)$ Whittaker used Habitat information in his five kingdom classification.
$(iv)$ Archaebacteria can live under extreme conditions.

Out of the four statements $(1-4)$ given below,two are correct regarding Whittaker's classification system. Which two are correct?
$(1)$ Classification based on cell complexity
$(2)$ Classification based on mode of nutrition
$(3)$ Classification based on phylogenetic relationships
$(4)$ Classification based on habitat type

Auxospores and hormocysts are formed by $.....$ respectively.

Identify the correct evolutionary sequence of Whittaker's five kingdoms.

Assertion $A$: Slime molds are known as bread molds.
Reason $R$: The cell wall of molds is made up of cellulose.
Which option is correct for Assertion $A$ and Reason $R$?