MCQ
Open vascular system is absent in
- AHouse fly
- BCockroach
- CSilver Fish
- ✓Earthworm
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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.
$R -$ $2 ATP + 2 FADH_2 + 4 NADH_2$ are produced during glycolysis.