Question

How many of the following statement(s) is/are correct regarding secondary growth?

A. Secondary tissues are formed from lateral meristems.
B. Gymnosperms show secondary growth.
C. Periderm is a secondary tissue that helps in secondary growth.
D. Because of the presence of vascular cambium, secondary growth does not occur in monocots.

• A. One
• B. Two
• C. Three
• D. Four

Answer 1

The correct option is C Three

Secondary growth is the increase in thickness due to the formation of secondary tissues by lateral meristems. Except for some annual, most of the dicots and gymnosperms show secondary growth in their stems and roots. It takes place by the production of two types of secondary tissues - secondary vascular tissues and periderm. These tissues are formed by meristems, vascular cambium, and cork cambium, respectively.

Secondary growth does not occur in monocots because monocots do not possess vascular cambium between the vascular bundles.