Growth and Development of Plant - QS Study
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We know seeds give rise to seedlings, from seedlings there develops a large plant. Plant produces flowers and fruits. These are all the results of growth and development of the plant. Embryo is present in the seed. Growth of embryo is the germination. So without the growth of embryo germination of seed will not take place. Without germination seedlings will not produce. Without growth of seedlings a large plant will not develop. Without development of a large tree we shall not get flowers, fruits, seeds, wood, crops, or the forest and nothing of this sorts.

So growth and development of plant is essential for them so that they can again produce seed to maintain their growing by reproduction. Again the growth and development of plant is essential for all animals including human beings, because with growth and development of plant we will not get anything like – food, medicine, cloths, house building materials and a habitable environment. Growth is a fundamental characteristic of all living organisms. Growth means a permanent increase in shape, size weight and in bulk of a plant or its organ.

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Region of Growth: The ideal growing region of plants are its root and shoot apex. In root or shoot apex there are apical meristems. This region is also known as primary meristamatic region or primary growth region.

Growth in length: The apical Meristamatic tissue by successive cell division creates new cells. The new cells later on increase in size. In this way by the formation of new cells and their increase in size, the apical parts successively increase in length. Formation of young leaf and bud is also the function of these tissues.

At the top of the root there present a cover like structure, which is called root cap. The cell division region is behind the root cap region. The cell of this region divide rapidly and forms many new cells. Behind the cell division region of elongation. Cells of this region increase in size and volume especially in length, as a result length of root increase. Behind the region of elongation lies the permanent region. Cells of this region are mature and are different is shape and size.

At the top of stein there is a bud called apical bud or shoot apex. Cells of apical bud are meristamatic cells. Therefore this is the cell division region, because cells of this region divide rapidly and increase in number. Behind this region is the region of elongation, as cells of this region rapidly increase in length. Behind this region is the pennanent region, cells of this region is mature and are different in shape and size.