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प्रश्न
How is the mycorrhizal association helpful in absorption of water and minerals in plants?
उत्तर
Mycorrhiza is a symbiotic association of fungi with the root systems of some plants. The fungal hyphae either form a dense network around the young roots or they penetrate the cells of the roots. The large surface area of the fungal hyphae is helpful in increasing the absorption of water and minerals from the soil. In return, they get sugar and nitrogenous compounds from the host plants. The mycorrhizal association is obligate in some plants. For example, Pinus seeds do not germinate and establish in the absence of mycorrhizal.
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संबंधित प्रश्न
Differentiate between Apoplast and Symplast pathways of movement of water 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?
Water is indispensable for life. What properties of water make it useful for all biological processes on the earth?
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?
