Question

The secondary growth in stem of Cycas is brought about by

• A. Persistent cambium
• B. Short lived cambium
• C. Number of cambia produced in succession
• D. Isolated strips of cambium

Answer 1

The correct option is C Number of cambia produced in succession

Secondary growth in plants is showcased by the growth which results due to cell division of lateral meristems or cork cambium and vascular cambium. This is generally represented as the thickening and widening of the stem and roots of plants. In Cycas, the vascular bundles in the stem are conjoint, collateral open and arranged in a ring. Secondary growth results in the formation of new concentric rings of secondary vascular tissues brought about by the cambia produced in succession. Thus, the correct answer is option C.