Question

Length of petiole increases by the activity of

• A. Apical meristem
• B. Lateral meristem
• C. Intercalary meristem
• D. All the above

Answer 1

The correct option is C Intercalary meristem

• Intercalary meristems are residual apical meristems present at the nodes and internodes which increases the length of the plant
  
• A slender stalk-like structure which joins the leaf blade to the stem is known as a petiole.
• A petiole is formed by the transitional part of the plant (between the stem to the leaf blade).
• The increase in the length of the petiole is due to the activity of the intercalary meristems.

So, the correct answer is 'Intercalary meristem'.