Certain infectious particles lack nucleic acids yet cause diseases. Which of the following correctly describes the infectious agent and a disease it causes?

Mosaic disease in tobacco is due to

Prions are infectious agents primarily composed of:

Common cold is a

Tobacco mosaic virus is a tubular filament of size

Cladonia rangiferina is a/an

Viroids have

The fungal partner in lichen is called mycobiont whereas algal partner is called

Bare rock surfaces are initially colonized by organisms like lichens. What is the ecological term for such organisms?

The first organisms to colonise rocks are

I. DJ Ivanowsky (1892) recognised certain microbes as causal organisms of the mosaic disease of tobacco

II. MW Beijerinck (1898) demonstrated that the extract of infected plants of tobacco could cause infection in healthy plants and called the fluid as contagium vivum fluidum

III. WM Stanley (1935) showed that these microbes could be crystallised and crystals consist largely of protein

The above statements are assigned to