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What are 'biofertilizers'? Explain them with suitable examples.
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What is a heterocyst?
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Give the meaning of the Nif gene.
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Name the aquatic fern commonly used in paddy fields as a biofertilizer.
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Define chemoautotrophs.
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Identify free-living bacterial bio-fertilizer.
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Give one example of the autosomal recessive disorder.
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Short Answer Question.
Write note on –PKU.
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Which one of the following is a free-living bacterial biofertilizer?
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Name any two bacterial biofertilizers.
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Define estuary.
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Very Short Answer Question:
What is denitrification?
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Very Short Answer Question:
Name the bacteria responsible for conversion of nitrite to nitrate.
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Long Answer Question:
Explain biological nitrogen fixation with example.
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______ associated with plants like Azolla and Cycas can be used as a biofertilizers.
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State any three benefits of mycorrhiza.
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State any three benefits of Biofertilizers.
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Match the column A with B and rewrite correct pairs.
| A | B | |
| i. | Symbiotic N2 fixing bacteria | VAM |
| ii. | Free-living N2 fixing bacteria | Rhizobium |
| iii. | Phosphate solubilizer | Nostoc |
| iv. | Endomycorrhizae | Microccocus |
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What is autosomal inheritance? Explain different disorders due to autosomal inheritance.
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Ventricular depolarization is represented by ______.
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