Which organism is formed by the symbiotic association between algae and fungi?

Lichens are important in the studies on atmospheric pollution because they

Assertion $(S)$: Viruses are considered as a link between living and non-living organisms.
Reason $(R)$: Viruses replicate only when they are inside a host cell,whereas they behave as non-living particles in a free state.

"Dodder" can transmit

$A$: Viroids lack a protective protein coat called a capsid.
$R$: Viroids contain a short strand of $DNA$.

In cyanophage,the genetic material is