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    Biology
    Grade-7
    Easy

    Question

    Pick the odd one out.

    1. Organic fertilizer
    2. Herbicide
    3. Biofertilizer
    4. Inorganic fertilizer

    Hint:

    • Biofertilizers contains live microorganisms 

    The correct answer is: Biofertilizer

      • Biofertilizers are the organisms which improve the nutrient quality of the soil
      • Biofertilizers contain the live organisms
      • Organic , Inorganic fertilizer and herbicides contains either the chemicals or by products of naturally occurring processes

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      _____________________ were implemented because chemical fertilizers have a negative impact on soil fertility.

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      The plants' straws and stalks are strengthened by the _________________ in the fertilizers.

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      If there is addition of chemical phosphorous during the preparation of fertilizer, then it is ___________ type of fertilizer.

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      The given picture illustrates the use of ­­­­­­­­_________________ by plant.

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      2. Biofertilizer
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      ___________________ is a component of protein and an amino acid in plants.

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      Natural fertilizers derived from plants and animals are known as _________________.

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      Chemicals that kill insects that destroy crops are called ________________.

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      In _________ pollination, the resulting progeny have lower disease immunity.

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