Question

Which of the following contributes to the formation of primary plant body?

• A. Cork cambium
• B. Intercalary meristem
• C. Intrafascicular cambium
• D. Interfascicular cambium

Answer 1

Answer: (B)

Intercalary meristem

• The primary plant body is composed of primary tissues which have the least number of hard or lignified cells instead they are made up of dense cells and are also called herbaceous structures.
  
• The residual portion of the apical meristems present at the nodes and internodes of stems and leaves which increases the length of the plant is called the intercalary meristem.
• The apical meristem and the intercalary meristems are the primary meristems because they contribute to the formation of a primary plant body.
• Cork cambium and vascular cambium (intrafascicular and interfascicular cambium) are secondary or lateral meristems.
• They are responsible for secondary growth in plants (increase in the thickness of plants).
• So, the correct answer is 'Intercalary meristem'