A nail is nailed into the trunk of a tree at a point 1 m from the soil level. After 2 years the nail will :

Explanation

If a nail is hammered into the trunk of a tree at a height of 1 m above the soil surface, then after two years it will remain at the same place. This is because the length of a plant increases due to the apical meristem. The apical meristem is present at the tips of the root and shoot. Since the nail is fixed in the stem, the permanent tissue does not divide in this condition. ## Page 35