MCQ
In Passiflora, the tendrils are modification of:
- AAxillary buds
- BUpper leaflets
- CWhole leaves
- DStipules
Explanation:
Tendrils are thin, long, thread shaped organs that wind tightly around a thin rod, a shoot or the stalk of another plant.
The tendrils of different plant groups are not homologous.
They can be modified shoots (Vitis), specialized leaves (Pisum), leaflets (Vicia, Lathyrus), leaf stalks (Clematis) or parts of roots that originate directly from the shoot (Vanilla).
In the case of Vitis vinifera and Bryonia dioica, the tendrils are lateral shoots usually opposite to a leaf. In Passiflora, the tendrils are modified axillary bud.
So, the correct option is 'Axillary bud'
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$(I)$ Chromosome cluster at opposite spindle poles.
$(II)$ Nuclear envelope assembles around the chromosome clusters.
$(III)$ Golgi complex and $ER$ reform.
$\begin{array}{|p{0.6\linewidth}|p{0.3\linewidth}|} \hline Column\,\,I & Column\,\,II \\ \hline a.\,\,Cellular\,\,level\,\,of\,\,organisation & 1.\,\,Cnidarians \\ \hline b.\,\,Organ\,\,level\,\,of\,\,organisation & 2.\,\,Platyhelminthes \\ \hline c.\,\,Organ\,\,system\,\,level\,\,of\,\,organisation & 3.\,\,Chordates \\ \hline d.\,\,Tissue\,\,level\,\,organisation & 4.\,\,Porifera \\ \hline \end{array}$
$a\ \ b\ \ c\ \ d$