The arrangement and folding of each lamina without any relationship with other leaves in bud, is called

Two spines in Trapa fruit $('Singhara'\,\, fruit)$ are modifications of

Lateral roots arise from primordia developed by division of

$A$ : There are two alae in Pisum sativum flower.

$R$ : Both alae are covered by largest petal.

Which of the following is a non-endospermic monocot seed