Question

Which of the following is related to increase in girth of plant?

• A. Shoot apex
• B. Root apex
• C. Lateral meristem
• D. Intercalary meristem of stem

Answer 1

The correct option is C Lateral meristem

Secondary growth refers to the growth that results from cell division in the cambia or lateral meristems and that causes the stems and roots to thicken, while primary growth is growth that occurs as a result of cell division at the tips of stems and roots, causing them to elongate, and gives rise to primary tissue.

Secondary growth occurs in most seed plants, but monocots usually lack secondary growth. In many vascular plants, secondary growth is the result of the activity of the two lateral meristems, the cork cambium and vascular cambium. Arising from lateral meristems, secondary growth increases the girth of the plant root or stem, rather than its length

So, the correct answer is 'Lateral meristem'