Biopesticides and Biofertilizers
Biology ⇒ Biotechnology and Applications
Biopesticides and Biofertilizers starts at 10 and continues till grade 12.
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Describe how Trichoderma acts as a biopesticide.
Describe one environmental advantage of using biofertilizers.
Describe one way in which biofertilizers contribute to sustainable agriculture.
Describe the process by which Rhizobium benefits leguminous plants.
Describe the role of Bacillus thuringiensis (Bt) as a biopesticide.
Explain how Azotobacter acts as a biofertilizer.
Explain the difference between biopesticides and chemical pesticides.
Explain the role of blue-green algae in rice cultivation.
Which group of organisms is commonly used as biofertilizers to fix atmospheric nitrogen? (1) Fungi (2) Bacteria (3) Insects (4) Viruses
Which of the following is a benefit of using biopesticides over chemical pesticides? (1) They are more toxic to humans (2) They are biodegradable (3) They persist longer in the environment (4) They cause more pollution
Which of the following is a benefit of using mycorrhizal fungi as biofertilizers? (1) They fix atmospheric nitrogen (2) They enhance phosphorus uptake (3) They cause plant diseases (4) They reduce soil fertility
Which of the following is a characteristic of biofertilizers? (1) They are living organisms (2) They are synthetic chemicals (3) They decrease soil fertility (4) They are always harmful to plants
Biofertilizers are mainly used to improve the ________ content of the soil.
Fill in the blank: ________ is a bacterial biofertilizer that is commonly used in non-leguminous crops.
Fill in the blank: ________ is a biofertilizer that forms nodules on the roots of leguminous plants.
Fill in the blank: ________ is a common bacterial biofertilizer that fixes nitrogen in leguminous plants.
True or False: Biofertilizers can help fix atmospheric nitrogen in the soil.
True or False: Biofertilizers can help improve soil structure and water retention.
True or False: Biofertilizers can only be used for leguminous crops.
True or False: Biopesticides are always less effective than chemical pesticides.
