Question

Find out the correct sequence of labelling of diagram given below.

• A. A- spike, B- raceme, C- dichasial cyme, D- monochasial cyme
• B. A- raceme, B- spike, C- monochasial cyme, D- dichasial cyme
• C. A- dichasial cyme, B- monochasial cyme, C- raceme, D- spike
• D. A- spikc, B- dichasial cyme, C- monochasial cyme, D- raceme
• E. A- raceme, B- dichasial cyme, C- spike, D- monochasial cyme

Answer 1

The correct option is B A- raceme, B- spike, C- monochasial cyme, D- dichasial cyme

Option B is the correct answer. Inflorescence is a term used to define the arrangement of cluster of flowers on a stem either on the main stem axis or a peduncle.
In a raceme type of inflorescence, the flower develops at the axil between the stem and branch of a leaf on long, un-branched axis as is found in snapdragon.
A spike is a raceme with the flowers developing directly from the stem. For example, barley.
Dichasial cyme has a stunted central flower and two lateral flowers on elongated pedicels.

The monochasial cyme, the main stem ends in a flower and a lateral branch too ending in a flower below a repeat of this becomes the helicoid cyme.

Therefore, the correct answer is option B.