Question

Active cell divisions are found in

• A. Latex
• B. Pith
• C. Internode
• D. Root and shoot tips

Answer 1

Answer: (D)

Root and shoot tips

• The primary meristem tissues present at the apex of the stem and roots are the most metabolically active dividing cells.
  
• They are present at the shoot tip and root tip.
• They help in the elongation of shoot tip and root tip in plants.
• The shoot apical meristems form three distinct layers at the shoot tip

1) Dermatogen is the primary meristem that forms the outer most layer of a plant or a plant part and forms the epidermis.
2) Periblem is a primary meristem which is located between the plerome and the dermatogen and it forms the cortex.
3) Plerome is the primary meristem that forms the central core of a plant or plant part which gives rise to the stele (includes the vascular tissue, pith and pericycle).

So, the correct answer is 'Root and shoot tips'.