Question

Which one of the following inflorescence is found in the sunflower
A) Capitulum
B) Cyathium
C) Panicle
D) Padix

Answer 1

Hint:The arrangement of flowers on floral axis is known as inflorescence. Flowers are modified shoots.Various modifications take place in the shoot to give rice to inflorescences such as shoot meristem changes to floral meristem. Internodes do not elongate and the axis gets condensed.

Complete answer:
The sunflower is the member of the family asteraceae. Capitulum or head is the characteristic feature of the sunflower family. Capitulum is an inflorescence that includes a closely packed flower without stalk and arises on the flattened axis at the same level. The capitulum is surrounded by an involucre of bracts giving it the appearance of a single flower..

Additional information:Based on arrangement of floral axis inflorescence is of two types. Racemose and cymose
>Racemose inflorescence: In racemose inflorescence the main axis continues to grow. The flowers are borne laterally in an acropetal succession, which means the older flowers are at the base and younger flowers are near the apex. For example radish, mustard amaranths etc.
>Cymose inflorescence: in cymose inflorescence the axis terminates in a flower, because of that there is a limited growth. The flowers are borne in a basipetal order, which means the older flowers are at the base and younger flowers are near the base. For example cotton , jasmine etc.

Hence the correct answer is option ‘A’.

Note:The arrangement of flowers on the stem of the plant is called inflorescence. Cross pollination is possible by inflorescence. It makes the flower more attractive towards the insects. Wind pollination occurs in large inflorescence.