Question

Choose the correct answer from the alternatives given.
In the control of flowering, the organs that monitor photoperiod are the:

• A. floral buds
• B. leaves
• C. roots
• D. short apex

Answer 1

The correct option is B leaves

It is interesting to note that while shoot apices modify themselves into flowering apices prior to flowering, they (i.e., shoot apices of plants) by themselves cannot perceive photoperiods. The site of perception of light/dark duration are the leaves.

So, the correct option is 'leaves'.