Answer:
Evergreen plant are
those which has leaves persistent in all the four seasons. In contrast todeciduous
plants which completely loose their foliage during winter or dry season. Pinus belonging
to gymnosperms is an evergreen tree. The flowering plants under conditions
ofextreme cold shed their leaves and become dormant.
But Pinus due to the
presence of bark, which is thick, needle-like leaves having sunkenstomata,
reduce the rate of transpiration. The cold areas are both physiologically
andphysically dry due to scanty rainfall, precipitation as snow, decreased root
absorption at lowtemperature and exposed habitats.
But, Pinus
is well adapted to such conditions. It continues to manufacture food during
thisperiod and grown to dominate other plants. This show that Pinus is an
evergreen tree. It do not shed its leaves, i.e., needles under any condition.
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