🔬 Biology · Anatomy of Flowering Plants · NEET

The increase in the girth (thickness) of a stem is brought about by the:

Correct answer: A. cambium

Explanation: The cambium adds new xylem and phloem, increasing girth.

Concept context

Internal tissue organisation: meristems, permanent tissues (xylem, phloem, parenchyma), and secondary growth. Frequently tested in NEET.