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 species act as biopesticides.
Describe the environmental impact of excessive use of chemical fertilizers and how biofertilizers can help mitigate these effects.
Describe the process by which phosphate-solubilizing bacteria enhance plant growth.
Describe the process by which Rhizobium bacteria fix nitrogen in leguminous plants.
Describe two advantages of using biopesticides over chemical pesticides.
Explain how mycorrhizal fungi act as biofertilizers.
Explain the difference between microbial and biochemical biopesticides.
Explain the role of Bacillus thuringiensis (Bt) as a biopesticide.
Which microorganism is commonly used as a biofertilizer for rice cultivation? (1) Azotobacter (2) Azospirillum (3) Anabaena (4) Bacillus thuringiensis
Which of the following is a benefit of using biofertilizers? (1) Increases chemical residue in crops (2) Reduces soil fertility (3) Promotes plant growth (4) Causes water pollution
Which of the following is a benefit of using biopesticides? (1) They persist in the environment for a long time (2) They are highly specific to target pests (3) They accumulate in the food chain (4) They are non-biodegradable
Which of the following is a characteristic of biopesticides? (1) Broad-spectrum toxicity (2) High persistence in the environment (3) Target specificity (4) Non-biodegradable
Fill in the blank: ________ is a biofertilizer that can be used in association with actinorhizal plants to fix nitrogen.
Fill in the blank: ________ is a biofertilizer that can fix atmospheric nitrogen in association with grasses.
Fill in the blank: ________ is a biofertilizer that forms symbiotic associations with non-leguminous plants to fix nitrogen.
Fill in the blank: ________ is a commonly used nitrogen-fixing biofertilizer for leguminous crops.
True or False: Biofertilizers can be used in both organic and conventional farming systems.
True or False: Biofertilizers can fix atmospheric nitrogen in the soil.
True or False: Biofertilizers can help in the reclamation of degraded soils.
True or False: Biofertilizers can improve soil structure and fertility over time.
