MCQ
A bacterial cell undergoes binary fission every twenty minutes. Starting with a single bacterium how many bacteria will be produced at the end of $ 3 $ hours
- A$128$
- B$256$
- ✓$512$
- D$1022$
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$I.$ Each actin (thin filament) is made up of $2 \mathrm{~F}$ (filamentous) actins
$II.$ $F-$actin is the polymer of G (globular) actin
$III.$ $2 \mathrm{~F}=$ actins are twisted into a helix
$IV.$ Two strands of tropomyosin (protein) lies in the grooves of $F-$actin
The correct option is
$(a)$ Large number of scattered vascular bundles surrounded by bundle sheath.
$(b)$ Large conspicuous parenchymatous ground tissue.
$(c)$ Vascular bundles conjoint and closed.
$(d)$ Phloem parenchyma absent. Identify the category of plant and its part