Introduction to Biocontrol Agents

Q. Trichoderma harzianum has proved a useful microorganism for:

1. gene transfer in higher plants
2. biological control of soil-borne plant pathogens
3. bioremediation of contaminated soils
4. reclamation of wastelands

Q. Nucleopolyhedrovirus is used as a biocontrol agent.

1. True
2. False

Q.

If heterocysts of blue-green algae are covered then how do they take water by diffusion through it?