Symbiotic association between fungi and algae are called $ . . . . . . $.

Viruses possess all the following properties,except

It is responsible for potato spindle tuber disease.

Asexual reproduction in lichens occurs through which of the following? $(i)$ Pycniospores $(ii)$ Zoospores $(iii)$ Aplanospores $(iv)$ Soredia $(v)$ Apothecia

Are viruses animate or inanimate?

Match the Column-$I$ and Column-$II$:

Column-$I$	Column-$II$
$(i)$ Viroid	$(a)$ Ramachandran
$(ii)$ Cell	$(b)$ Leeuwenhoek
$(iii)$ Virus	$(c)$ $T.O. Diener$
$(iv)$ Triple helical structure of collagen	$(d)$ Ivanowsky