Class 11 · Plant Growth and Development

Primary and Secondary Growth in Plants — NEET Biology

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You also know that in dicotyledonous plants and gymnosperms, the lateral meristems, vascular cambium and cork-cambium appear later in life. These are the meristems that cause the increase in the girth of the organs in which they are active. This is known as secondary growth of the plant.

NCERT Biology · Class 11 · Chapter 13 · Paragraph 6
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Why do lateral meristems like vascular cambium contribute to increase in girth and not length in dicots?

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