Biopesticides and Biofertilizers
Biology ⇒ Biotechnology and Applications
Biopesticides and Biofertilizers starts at 10 and continues till grade 12.
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Describe how Azolla acts as a biofertilizer in rice fields.
Describe how phosphate-solubilizing bacteria benefit plants.
Describe the process of nitrogen fixation by Rhizobium in leguminous plants.
Describe the role of mycorrhizae as biofertilizers.
Describe the role of Trichoderma as a biopesticide.
Explain how biofertilizers improve soil fertility.
Explain the difference between biopesticides and chemical pesticides.
Explain the term 'biochemical biopesticide'.
Which microorganism is commonly used as a biopesticide to control insect larvae? (1) Bacillus thuringiensis (2) Azotobacter (3) Nostoc (4) Penicillium
Which of the following is a benefit of using biofertilizers? (1) Soil pollution (2) Increased soil fertility (3) Water contamination (4) Pest resistance
Which of the following is a characteristic of biofertilizers? (1) Non-living (2) Enhance soil fertility (3) Cause water pollution (4) Inhibit plant growth
Which of the following is a cyanobacterial biofertilizer? (1) Azospirillum (2) Nostoc (3) Bacillus subtilis (4) Trichoderma
Fill in the blank: ________ is a biofertilizer that can fix atmospheric nitrogen in association with grasses.
Fill in the blank: ________ is a common bacterial biofertilizer used for leguminous crops.
Fill in the blank: ________ is a free-living nitrogen-fixing bacterium used as a biofertilizer for non-leguminous crops.
Fill in the blank: ________ is a fungal biofertilizer that forms symbiotic associations with plant roots.
True or False: Biofertilizers can fix atmospheric nitrogen in the soil.
True or False: Biofertilizers can help reduce the use of chemical fertilizers.
True or False: Biofertilizers can increase crop yield without harming the environment.
True or False: Biofertilizers can replace all chemical fertilizers in agriculture.
