Question

In Boerrhavia diffusa,anomalous secondary thickening of stem occurs due to:

• A. Extrastelar cambium
• B. Successive rings of cambium
• C. Interxylary phloem
• D. Interxylary cork

Answer 1

Answer:

B. Successive rings of cambium

Anomalous secondary thickening in the stem of Boerhaavia diffusa occurs due to abnormal activity of the cambium, which produces secondary vascular bundles on the inner side and parenchymatous cells on the outer side. This results in the stem becoming flattened or ribbon-like instead of its normal cylindrical shape.