Trichoderma is knowna. To have no adverse effect on crop plants.b. To be a broad spectrum pesticide.c. As free living fungi or in symbiotic association with roots.d. To be applied as spray on Brassica leaves.Select the correct statement.

A biological control being developed for use in the treatment of plant disease is the fungus Trichoderma. Trichoderma species are free-livingfungi that are very common in the root ecosystems. They are effective biocontrol agents of several plant pathogens.