MCQ
Srem modified to perform the function of a leaf and having many internodes is called as:
- ✓Phylloclade.
- BCladode.
- COffset.
- DPhyllode.
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Choose the correct combination of $A$ and $B$ from the below given options
$I.$ 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