Q. 24.7( 3 Votes )

Weeds affect the crop plants by :
A. Killing of plants in field before they grow

B. Dominating the plants to grow

C. Competing for various resources of crops (plants) causing low availability of nutrients

D. All of the above

Class 9th Evergreen - Science 16. Improvement in Food Resources

Answer :

Weeds compete for food, space and light. They take up the plants nutrients and reduce the growth of the crop. They may sometimes produce toxic substances which may interfere with crop growth. During harvesting, weeds get mixed up with crop to lower down its quality. Hence statement C is correct.

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