Question

The ratio of old to young flowers in Euphorbia inflorescence is
A. 1:1
B. 1: many
C. 1:2
D. 10:1

Answer 1

Hint: Euphorbia is a very large and diverse group of flowering plants .
They belong to Angiosperms.

Complete answer: The ratio of old to young flowers in euphorbia inflorescence is 1 ratio many
The old flower is the single female flower and the young ones are male flowers, it is seen in cyathium inflorescence.
Each cyanthium and cymose is actually a flower cluster or inflorescence containing unisexual, apetalous male and female flowers. The inconspicuous male flowers occur in clusters and are reduced to a single red stamen while the female flowers consist of a single ovary or the pistil on a stalk also known as pedicel.

So, the correct answer is “Option B”.

Additional Information: An inflorescence is a group or clusters of flowers arranged on a stem that is composed of the main branch or a complicated arrangement of branches.
Morphologically it is a modified part of the shoot of the seed plants where flowers are formed.
The modification can involve the length and nature of the internodes and the phyllotaxis, as well as variation in the proportions and reduction of the main secondary axis. One can also define inflorescence as the reproductive portion of the plant that bears a cluster of flowers in a specific pattern.

Note: Euphorbia is also or commonly called as spurge, in the spurge family.