Anthophore is an internode between
In some flowers, the internodal regions of the thalamus can enlarge and can be seen between the different whorls of floral organs. Anthophore is an internode between calyx and corolla. It is seen in Silene.
A. Two opposite leaves in spiral phyllotaxy are not the components of floral meristem.
B. Anthophore is the internode between calyx and corolla in the flower.
C. Androphore is the internode between corolla and androecium. It is seen in Passiflora.
D. Gynophore is the internode between androecium and gynoecium. It is seen in Cleome.
Hence, the correct answer is 'Calyx and corolla'