Stolon is
Horizontal underground runner
Arched runner
Both $(a)$ and $(b)$
Both wrong
In gourds, axillary buds develop spirally coiled structures called
It is not modification of stem for climbing
$I.$ Bear leaves and branches $II.$ Conduction of water and minerals $III.$ Storage of food
These are the functions of
Give scientific reasons : Opuntia has phylloclade.