Which one of the following tissues is responsible for increase of girt

Which one of the following tissues is responsible for increase of girth in the stem of a plant?

Tracheid

Pericycle

Intercalary meristem

Lateral meristem

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UPSC CDS-1 – 2019

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Lateral meristems are responsible for secondary growth, which is the increase in the diameter or girth of stems and roots. The two main types of lateral meristems are the vascular cambium (producing secondary xylem and phloem) and the cork cambium (producing the periderm, including cork).

Lateral meristems cause growth in girth (secondary growth) in plants.

Tracheids are components of xylem tissue involved in water transport and support. Pericycle is a layer of cells in the root from which lateral roots arise and sometimes contributes to secondary growth. Intercalary meristems are located at nodes in monocots and are responsible for increases in stem length between nodes (primary growth).

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