Question

write the functions of meristematic tissues??(a) apical (b) intercalary
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Answer 1

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The apical meristem, also known as the “growing tip,” is an undifferentiated meristematic tissue found in the buds and growing tips of roots in plants. Its main function is to trigger the growth of new cells in young seedlings at the tips of roots and shoots and forming buds.

Intercalary meristems are capable of cell division, and they allow for rapid growth and regrowth of many monocots. Intercalary meristems at the nodes of bamboo allow for rapid stem elongation, while those at the base of most grass leaf blades allow damaged leaves to rapidly regrow.

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Answer 2

Answer:

Apical Meristem Function

The apical meristem, found just below the surface of the branches and roots furthest from the center of the plant, is continually dividing. Some cells divide into more meristematic cells, while other cells divide and differentiate into structural or vascular cells. There are two apical meristem locations in most plants. The shoot apical meristem is found in the tips of plants. This apical meristem is responsible for creating cells and growth to drive the plant into the light and air, where it can photosynthesize and exchange built up gases.

The root apical meristem is found at the tips of roots. Sensing the conditions of the soil around the root, signals are created within the apical meristem which direct the plant towards water and desired nutrients. It is for this reason that roots often invade pipes for water and drainage, which carry many of the nutrients they need. The apical meristem, protected by the root cap continues to produce cells even as the root cap is scraped away as it pushes through the dirt. The apical meristem must produce enough cells to not only extend into the soil, but also to replace the cells lost to abrasion.

Intercalary Merisyems

Intercalary meristems occur between their derivatives. The vascular cambium, which gives rise to secondary phloem and xylem, can be considered to be one example. So is the cork cambium, which forms periderm, essentially bark. Intercalary meristems near the nodes of grass stems (technically culms) increase stem length. Consider a grass stem with active intercalary meristems in each internode, all contributing to the growing stem. It is not hard to understand how the tallest grass, bamboo, can grow about a meter a day.