Question

Removal of apical bud makes the plant
(A) Bushy
(B) Grow rapidly
(C) Grow slowly
(D) Dormant

Answer 1

Hint: The apical bud of a plant is the primary growing point located at the apex of the stem. The apical bud produces a hormone called Auxin which inhibits the growth of the lateral buds down on the stem towards the axillary bud.

Complete answer:
Growth in plants is largely restricted to specialized regions of active cell division called meristems. Plants have different kinds of meristems. The meristems which occur at the tip of roots shoots and produce primary tissues are called apical meristems. Root apical meristems occupy the tip of the root while the shoot apical meristem occupies the distant most region of the stem axis. During the formation of leaves and elongation of the stem. Some cells left behind from shoot apical meristem, constitute the axillary bud. Such buds are present in the axils of leaves and are capable of forming a branch or a flower. The meristem which occurs between mature tissues is known as intercalary meristem. They occur in grasses and regenerate parts removed by the grazing herbivores. Both apical meristems and intercalary meristems are primary meristems because they appear early in the life of a plant and contribute to the formation of the primary plant body. The meristem that occurs in the mature regions of roots and shoots of many plants. Particularly those that produce woody axis and appear later than the primary meristem is called the secondary or lateral meristem. They are cylindrical meristems. Fascicular vascular cambium, interfascicular cambium, and cork-cambium are an example of the lateral meristem. These are responsible for producing the secondary tissues. Following divisions of cells in both primary and as well as secondary meristems, the newly formed cells become structurally and functionally specialized and lose the ability to divide. Such cells are termed permanent or mature cells and constitute permanent tissues. During the formation of the primary plant body, specific regions of the apical meristem produce dermal tissue, ground tissues, and vascular tissues. The apical bud produces a hormone called Auxin which inhibits the growth of the lateral buds. When the apical bud is removed from the plant, the Auxin gets automatically removed and due to which the lateral buds grow very fast and make the plant bushy in nature.

So, the correct answer is option A i,e Bushy.

Note:
Dormant for buds whose growth has been delayed for a very long time. Buds in the inner bark of the older branches and the main stem of a tree that does not develop unless stimulated by the loss or damage of the distal part.