Question

The inflorescence of sunflower is
A. Umbel
B. Cyathium
C. Hypanthodium
D. Capitulum

Answer 1

Hint: The arrangement of the floral parts in the flower.

Complete answer:
An inflorescence is the cluster of the flowers arranged on a stem that is composed of the main branch or a complicated arrangement of branches.
Sunflower is an annual plant of the family Asteraceae with a large head called capitulum, which is the characteristic inflorescence of sunflower.

Additional information
> The sunflower family is also called Asteraceae and Compositae which is a large and widespread family of flowering plants.
> Mostly all Asteraceae bear their flowers in dense heads called capitula surrounded by involucral bracts.
> The petals or sun rays in a sunflower hard are individual star-shaped flowers called ray flowers, and the sun disk is made of smaller circular shaped Individual flowers called disc florets.
> The individual flowers in a head have 5 fused petals and hair-like structures called pappus.
> A ray flower is a 3-tipped individual flower in the head while a disc flower is a radially symmetric individual flower in the head.

So, the correct answer is Capitulum.

Note: The distinguishing characteristic of Asteraceae is their inflorescence, a type of specialized, composite flower head or capitulum. Depending upon the variety, the inflorescence may consist of ray flowers, disc flowers, or both. The ovary of each flower is situated below the attachment of the corolla and stamen, a condition referred to as epigynous or inferior.