MCQ
System of classification that employs numerical data to evaluate similarities and differences is known as:
- AChemotaxonomy.
- BCytotaxonomy.
- CBiosystematics.
- ✓Phenetics.
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$(i)$ Mesosome is formed by the extensions of plasma membrane into the cell.
$(ii)$ The pili are elongated tubular structures made up of a protein.
$(iii)$ Flagellum is composed of filament, hook and basal body.
$(iv)$ Ribosomes are about $30\; nm$ by $50\; nm$ in size.