MCQ
Coralloid roots of Cycas are useful in
- ✓$N_2$-fixation
- BAbsorption
- CTranspiration
- DFixation
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$1.$ Unicellular and prokaryote
$2.$ Unicellular and eukaryote
$3.$ Multicellular and eukaryote
$4.$ Autotrotroph and heterotroph
$(i)$ 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.