State the location and function of different types of meristem.
Meristems are specialised regions of plant
growth. The meristems mark the regions where active cell division
and rapid division of cells take place. Meristems are of three
types depending on their location.
It is present at the root apex and the shoot
apex. The shoot apical meristem is present at the
tip of the shoots and its active division results in the
elongation of the stem and formation of new leaves. The root
apical meristem helps in root elongation.
It is present between the masses of mature
tissues present at the bases of the leaves of grasses. It helps
in the regeneration of grasses after they have been grazed by
herbivores. Since the intercalary meristem and the apical
meristem appear early in a
they constitute the primary meristem.
It appears in the mature tissues of roots and
shoots. It is called the secondary meristem as it
appears later in a
It helps in adding secondary tissues to the plant body and in
increasing the girth of plants. Examples include fascicular
cambium, interfascicular cambium, and cork cambium
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