2,4-D is used to remove broad leaved weeds or dicot weeds in cereal crops or monocot plants.

Experts please give the meaning of this sentence

Dear Student, 2,4-D is a herbicide which is used to kill broadleaf weeds, which are dicots, while monocots are resistant to it. It is because grasses inactivate 2,4-D inside the plant, while broadleaf dicots do not. So, the statement means 2,4-D is sprayed on the monocots (cereals) to destroy the dicot weeds (broad leaved) that might be present along with them. Regards