Carpels are fused in . . . ….  

When both sexes are absent from a flower or are non-functional, the flower is said to be

The following diagrams represent the type of placentation in ovary. Identify the correct combination of labelling

$1 – 2 – 3$

A flower which can be divided into equal vertical halves by more than one plane of division is

Differentiate between :

$(a)$ Bract and Bracteole

$(b)$ Pulvinus and Petiole

$(c)$ Pedicel and Peduncle

$(d)$ Spike and Spadix

$(e)$ Stamen and Staminoid

$(f)$ Pollen and Pollenium