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$(a)$ Cockroach $(b)$ Sparrow $(c)$ Terrestrial reptiles $(d)$ Man
| Column $- I$ | Column $- II$ |
| $(1)$ Psilopsida | A. Sellaginella |
| $(2)$ Lycopsida | $(B)$ Adiantum |
| $(3)$ Sphenopsida | $(C)$ Equisetum |
| $(4)$ Pteropsida | $(D)$ Psilotum |
| Column $- I$ (Organism) |
Column $-II$ (Excretory |
||
| $A$ | Cockroach | $I$ | Nephridia |
| $B$ | Cat fish | $II$ | Malpighian tubules |
| $C$ | Earthworm | $III$ | Kidneys |
| $D$ | Balanoglossus | $IV$ | Flame cells |
| $E$ | Flatworm | $V$ | Proboscis gland |
$(i)$ They are saprophytic protists.
$(ii)$ Under suitable conditions, they form an aggregation (called plasmodium) which may grow and spread over several feet.
$(iii)$ During unfavourable conditions, the plasmodium differentiates and forms fruiting bodies bearing spores at their tips.
Which of the following class of protists is being described by the above statements