Question

Verticillaster inflorescence is the characteristic of family

• A. Cucurbitacae
• B. Rubiaceae
• C. Labiatae
• D. Asteraceae

Answer 1

The correct option is C Labiatae

Verticellaster is a special type of inflorescence seen in Leucas. At each node of the stem two axillary opposite cymose inflorescences develop on either side. The cyme in the axil of each leaf, starts as a dichasial cyme but subsequently become monochasial scorpioid cyme. As a result the cyme bends round the stem on either side and meets a similar cyme from the opposite side. Hence, at each node there is a cluster of flowers completely surrounding the stem. It is a characteristic of family Labiatae. Cucurbitaceae family shows axillary solitary inflorescence.
Thyrse inflorescence is a characteristic of Rubiaceae family.
Capitulum inflorescence is a characteristic of family Asteraceae.
Therefore, the correct answer is option C.