Wednesday, July 1, 2015

Osmotic adjustments in Plants:

Osmotic adjustments in Plants:
On the basis of the available amount of water and salts, plants are divided into three groups.
Osmotic adjustments in Plants

Hydrophytes:
Hydrophytes are the plants which live completely or partially submerged in freshwater. Such plants do not face the problem of water shortage. They have developed mechanisms for the removal of extra water from their cells. Hydrophytes have broad leaves with a large number of stomata on their upper surfaces. This characteristic helps them to remove the extra amount of water......
Hydrophytes

Xerophytes:
Xerophytes live in dry environments. They possess thick, waxy cuticle over their epidermis to reduce water loss from internal tissues. They have less number of stomata to reduce the rate of transpiration. Such plants have deep roots to absorb maximum water from soil.

Succulent Oxygen:
Some xerophytes have special parenchyma cells in stems or roots in which they store large quantities of water. This makes their stems or roots wet and juicy, called Succulent Organs.

Halophytes:
Halophytes live in sea waters and are adapted to salty environments. Salts enter in the bodies of such plants due to their higher concentration in sea water.

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