question_answer 25)

  The free-livings fungus Tiichoderma can be used for (a) killing insects                                                               (b) biological control of plant diseases (c) controlling butterfly caterpillars                          (d) producing antibiotics

Answer:

                  (b)Trichoderma species are free-living fungi that are very common in soil. They are effective bio control agents of several soil borne plant pathogens other options are incorrect.