(1)What are weeds? How can we contred them?
(2)Can wier oreganisms be seen with the naked eye? If not, how Can they be seen?
(3)Name the micro organisms which can fix atmospheric
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(1)What are weeds? How can we contred them?
(2)Can wier oreganisms be seen with the naked eye? If not, how Can they be seen?
(3)Name the micro organisms which can fix atmospheric
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Answer:
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Explanation:
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(1) Weeds are unwanted and uncultivated plants that grow with crops and compete with crops for nutrients and can also cause crop toxification.Process of controlling the weed is called weeding. Weeding is done manually by using khurpi and by using mechanical machines. Weeds are also controlled by using some chemical substances like 2, 4-D.
(2) No, microorganism cannot be seen with the naked eye. They are microscopic in size, hence are called 'microorganism'. Microscope is required to observe them.
(3)The microorganism which can fix atmospheric nitrogen in the soil is bacteria.