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प्रश्न
Water is indispensable for life. What properties of water make it useful for all biological processes on the earth?
उत्तर
The properties of water that make it useful for all biological processes on the earth are:
- Water can dissolve most of the substance and hence it is Universal Solvent also water is a major component of the cells so it is an important ingredient of the cells.
- In some the animals like frogs and fishes which conduct external fertilization, water is the main source of medium for the male gamete to reach the female gamete.
- Aquatic organisms also require oxygen for breathing So water helps them by dissolving the oxygen
- In aquatic plants, water acts as the pollination agent.
- Water also helps in maintaining the temperature of living beings by attaining a cooling effect.
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संबंधित प्रश्न
Differentiate between Apoplast and Symplast pathways of movement of water in plants
How is the mycorrhizal association helpful in absorption of water and minerals in plants?
Which of the given statements are TRUE?
- Symplast pathway consists of non living parts of plant body, i.e. cell walls and intercellular spaces.
- In apoplast pathway, water movement is fast.
- In symplast pathway, water movement occurs along the interconnected protoplast through plasmodesmata.
Which one of the pathways of water movement involves cell wall and intercellular spaces?
Cytoplasmic streaming shown by ______.
Differentiate between Apoplast and Symplast pathways of water movement. Which of these would need active transport?
Give the location of casparian strip and explain its role in the water movement.
Correct the statements:
Most of the water flow in the roots occurs via the symplast.
Minerals absorbed by the roots travel up the xylem. How do they reach the parts where they are needed most? Do all the parts of the plant get the same amount of the minerals?
When a freshly collected Spirogyra filament is kept in a 10% potassium nitrate solution, it is observed that the protoplasm shrinks in size:
What will happen if the filament is replaced in distilled water?
