NEET UG 2003 — Biological Classification

Which one of the following statements about viruses is correct?

Tobacco mosaic virus is a tubular filament of size:

Chromosomes in a bacterial cell can be $1-3$ in number and:

In which kingdom would you classify the archae and nitrogen-fixing organisms, if the five-kingdom system of classification is used?

Viruses are no more "alive" than isolated chromosomes because:

The chief advantage of encystment of an Amoeba is:

Phenetic classification is based on: