Ladybug is a predator of

Which of the following is an effective medicine for diseases in cereal crops and vegetables?

Which fish is used to control mosquitoes by feeding on their larvae?

One of the major difficulties in the biological control of insect pests is that

Much work on biological control of insects has been done in

Identify the organism based on the following characteristics:
- It grows near the root system.
- It is an effective biocontrol agent of several plant pathogens.
- It is a biological control being developed for use in the treatment of plant diseases.