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Question
Which of the following is not an advantage of mycorrhiza?
Which of the following is not an advantage of mycorrhiza?
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Solution
The correct option is A Nitrogen fixation
Mycorrhiza
Mycorrhiza are the symbiotic association of fungi with the roots of plants.
Benefits to the plant
The association helps the plant to develop resistance to root-borne pathogens.
It makes the plant tolerant to drought and salinity and enhances plant growth and development.
The fungal filaments increase the surface area of the root hair for absorption of water and minerals. The fungi take phosphorus from the soil and pass it to the plant.
Nitrogen fixation
Nitrogen fixation, the process of fixing atmospheric nitrogen is done by symbiotic nitrogen fixing bacteria (example, Rhizobium) as well as free living nitrogen fixing bacteria (example, Azotobacter, Clostridium etc.). Cyanobacteria such as Anabaena or Nostoc containing heterocyst can also fix atmospheric nitrogen.
Mycorrhiza
Mycorrhiza are the symbiotic association of fungi with the roots of plants.
Benefits to the plant
The association helps the plant to develop resistance to root-borne pathogens.
It makes the plant tolerant to drought and salinity and enhances plant growth and development.
The fungal filaments increase the surface area of the root hair for absorption of water and minerals. The fungi take phosphorus from the soil and pass it to the plant.
Nitrogen fixation
Nitrogen fixation, the process of fixing atmospheric nitrogen is done by symbiotic nitrogen fixing bacteria (example, Rhizobium) as well as free living nitrogen fixing bacteria (example, Azotobacter, Clostridium etc.). Cyanobacteria such as Anabaena or Nostoc containing heterocyst can also fix atmospheric nitrogen.
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