Question

Secondary growth in thickness with distinct annual rings occur in plants growing in.

• A. Arctic regions
• B. Tropical regions
• C. Regions with seasonal changes
• D. Any region

Answer 1

The correct option is C Regions with seasonal changes

In the dicotyledonous trees, growing in temperate regions, formation of secondary xylem is influenced by seasonal changes of the year. It leads to formation of distinct annual rings, and finally, thickness of the plant body is changes.

So, the correct option is ‘Regions with seasonal changes’.