Question

A nail is inserted in the trunk of a tree at a height of 1 metre from the ground level. After 3 years the nail will :

• A. Move downwards
• B. Move upwards
• C. Remain at the same position
• D. Move sideways

Answer 1

The correct option is C

Remain at the same position

The correct option is C

Explanation of the correct option :

1. If a nail is inserted in the trunk of a tree at a height of 1 metre from the ground, it will stay at the same place even after 3 years as the tissues do not grow from the base of the plant but rather from the apical region.
2. The lateral meristem will have no effect on the tree's height.

Explanation of the incorrect option:

Option A:

The nail won't move downwards since no tissue grows in the downwards direction.

Option B:

The nail won't move upwards because the nail is not inserted in the apical meristem.

Option D:

The nail won't move sideways as the nail was not inserted in any node or internode.