Question

Stem elongation is known to be influenced by

• A. auxins and kinins
• B. florigen and gibberellins
• C. gibberellins and auxins
• D. auxins and florigen
  
  

Answer 1

The correct option is B

Explanation of the correct option:

1. Gibberellins (GAs) are plant hormones that regulate growth and influence various developmental processes, including stem elongation, germination, dormancy.
2. They can stimulate rapid stem and root growth, induce mitotic division in the leaves of some plants, and increase seed germination rate.
3. Florigen is a systemic signal that initiates flowering in plants.

Explanation of the incorrect option:

Option A,C and D didnot satisfy the appropriate explanation of the given question.

Final answer: Stem elongation is known to be influenced by florigen and gibberellins.