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

C) Remain at the same position

The plant grows in length by apical meristems. Apical meristem is present on the tip of root and shoot. A nail is inserted in trunk i.e., permanent tissue which does not divide.

  • These are present at the tips of the roots and shoots and helps in the increase of the height of the plants.

  • Various cell divisions facilitate the growth of the cells in the roots and shoots and help in cellular enlargement.

  • Apical meristem is divided into-promeristem zone, which contains actively dividing cells, and the meristematic zone, which contains protoderm, procambium and ground meristem.

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