Question

The inflorescence of grass/sedge/rice Family Graminaceae is?
A. Spike
B. Thyrsus
C. Spikelet
D. Raceme

Answer 1

Inflorescence is nothing but the cluster or the arrangement of the flower of the floral axis. There are various types of inflorescence based on the arrangement. The flowers of the Graminaceae Family are arranged in panicles.

Complete answer:
To know the correct answer to the question, we must be well aware of the inflorescence.
Now we know that the arrangement of flowers is called inflorescence. There are various types of inflorescences. The one present in the Family Graminaceae is the spikelet because in the members of the Graminaceae Family each spikelet has 1-5 flowers. This spikelet has glumes at its base. These glumes are leaf-like structures.
Spike is a type of racemose inflorescence in which the flowers are acropetally arranged. Acropetal arrangement means that the mature flowers are at the base while the young ones are at the apex. The flowers in spike inflorescence are sessile.
Raceme is also a type of Racemose inflorescence which is pedicellate (i.e it has stalks).

Therefore, the correct answer to the question is spikelet. The inflorescence of grass/sedge/rice Family Graminaceae is spikelet.

Note: The Family Graminaceae is commonly known as the grass family. They have a circular and hollow stem. The leaves of its members are simple and ligulate (i.e they have ligules). They bear hypogynous and zygomorphic flowers. The anthers are dithecous and versatile. The fruit is grain or caryopsis.