Question

A nail is driven in a stem of mango tree at 2 meter above the ground. How much height is attained by nail after 5 years

• A. 3 meters
• B. 5 meters
• C. 10 meters
• D. Nail remains at same height i.e., at 2 meters

Answer 1

The correct option is D Nail remains at same height i.e., at 2 meters

The growth of trees are attributable to the apical meristems. The shoot apical meristem generates above-ground aerial organs throughout the lifespan of higher plants. If the nail is driven into the tree at 2 mtrs from above the ground, it will remain at the same place even after 5 years while the tree must have attained a height because dividing cells i.e., apical meristem is present at the tip of the shoot or roots which increases the length of the shoot or roots.
Therefore, the correct answer is option D.