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What is the specific cell that does Nitrogen fixation in blue-green algae?
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Important Questions on Microbes in Human Welfare
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Select the correct group of biocontrol agents.
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The agent used to control insect populations:
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Which of the following can be used as a biocontrol agent in treatment of Plant diseases?
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Which of the following are the measures that should be taken to protect pollinators?
I. Reducing the level of pesticides used in and around your home.
II. Encourage building butterfly gardens, and bee boards.
III. Discourage the creation of your own pollinator-friendly garden.
IV. Not to support agriculture enterprises that avoid pesticide use.
The correct combination is:
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Which of the following helps in absorption of phosphorus from soil by plants?
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Observe the difference between these two images and answer the following question.
Name the plant that helps in the replenishment of soil.
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Which one of the following helps in nitrogen fixation?
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Shalini sees an uprooted pea plant. She notices some swellings on roots called root nodules. What do these root nodules contain?
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How do leguminous crops help in increasing soil fertility?
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What is Rhizobium? What is its function? How does Rhizobium help farmers? Why do farmers prefer to sow leguminous plants? In which form do plants absorb nitrogen?
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Draw a neat, labelled diagram of nitrogen cycle in nature. Which natural phenomenon occurring in the sky is responsible for nitrogen fixation?
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Lightning is one of the methods of:
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Shalini sees an uprooted pea plant. She notices some swellings on the roots called root nodules.
What does the relation between the roots of leguminous plants and bacteria teach us?
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Rhizobium leguminosarum is a nitrogen-fixing bacteria that occurs in the soil.
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Rhizobium bacteria fix atmospheric _____ in the soil.
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What is meant by 'nitrogen fixation'? State two ways in which nitrogen gas of the atmosphere can be 'fixed' in nature to get nitrogen compounds in the soil.
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Name the microorganisms which can fix atmospheric nitrogen in the soil.
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Name two leguminous plants which can fix nitrogen.
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Radharaman is a farmer. He always grows leguminous crops in alternation with other crop plants. Why?
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Rhizobium bacteria fixes _____ in the soil.
