a. Bract and Bracteole
b. Pulvinus and petiole
c. Pedicel and peduncle
d. Spike and spadix
e. Stamen and staminoid
f. Pollen and pollenium
a. The bracteolate is found between the bract and flower while a bract is found towards the base of the pedicle.
b. Petiole is a subcylindrical stalk that connects the lamina with the leaf base while Pulvinus is a swollen leaf base which is found in leguminous plants.
c. The Peduncle is a stalk of the whole inflorescence while a pedicle is the stalk of a flower.
d. Spadix is covered by several large bracts known as spates while in spike sessile flowers are attached on an elongated peduncle.
e. Every stamen represents a male reproductive organ and androecium is composed of stamens. Staminode is a sterile stamen.
f. Polonium is defined as the group of pollen grains while a pollen is a male gametophyte of angiosperms.