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Transport in Plants

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Biology

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Biology

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12
Give the significance of plasmolysis.

Plasmolysis is useful in the following ways:

1. It helps in recognition whether the cell is living or dead.

2. It helps in killing weeds. The concentrated solution of NaCl is sprayed over weeds which get killed due to plasmolysis.

3. Plasmolysis is used in preservation of food materials. Pickles and jams have more NaCl and sugar content respectively so that they must remain protected from the attack of fungus, spores, bacteria etc.

4. With the help of plasmolysis, the plants growing in crevices of walls of houses can be killed by adding hypertonic solution.

 

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Give the term for the ability to resist a pulling force.

Tensile strength
731 Views

What is transmembrane pathway ?

The movement of water through cell membranes is called trans membrane pathway.
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Why the cortex produces no resistance to movement of water ?

The cortical cells are loosely packed and produce no resistance to movement of water via cell walls or apoplast.
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Who introduced the apoplast—symplast concept ?

E. Munch (1930).
630 Views

Why the water is forced to move through cell membrane beyond endodermis ?

Water is forced to move through cell membranes beyond endodermis because of the suberin (waxy substance) present on radial walls of endodermal cells blocks water and solute movement through cell walls of endodermis. 
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