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Question
Given below are statements about the harmful effects of weeds on crop plants. Choose the correct statements.
(i) They compete with crop plants for water and nutrients.
(ii) They help in the proper growth of crop plants.
(iii) They compete with crop plants for space and light.
Given below are statements about the harmful effects of weeds on crop plants. Choose the correct statements.
(i) They compete with crop plants for water and nutrients.
(ii) They help in the proper growth of crop plants.
(iii) They compete with crop plants for space and light.
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Solution
The correct option is B i, iii
∙ Weeds are unwanted plants harmful for crops because they compete with crops for space, water and nutrients. This directy affects crop growth. They also interfere in harvesting.
∙ The process of removal of weeds from field is called weeding. It can be done by either using instruments like sickle or weed harrow or can be done by using herbicides.
∙ Weeds are unwanted plants harmful for crops because they compete with crops for space, water and nutrients. This directy affects crop growth. They also interfere in harvesting.
∙ The process of removal of weeds from field is called weeding. It can be done by either using instruments like sickle or weed harrow or can be done by using herbicides.
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