. Term used for biological methods controlling plant diseases and pests.

(a)        Biocontrol agents                  

(b)       Insecticides and pesticides

(c)       Weedicides                            

(d)       Phytocontrol agents

Best Answer

(a)        Biocontrol agents are environment friendly micro-organisms used for controlling plant pests, which are not chemicals. Insecticides and pesticides chemicals are harmful to the environment as they cause pollution.

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