In which type of plants is the leaf shown in the image found?

Explain the modification of leaves for food storage.

In $Opuntia$ (prickly pear),the leaf spines are a modification of the .......

Submerged hydrophytes have commonly dissected leaves for

Which type of phyllotaxy is found in Alstonia?

Which of the following two are the resultant of stipule modifications?
$I$. Spines in $Ziziphus$.
$II$. Tendrils in $Smilax$.
$III$. Tendrils in $Nepenthes$.
$IV$. Spines in $Argemone$.
$V$. Thorns in $Bougainvillea$.