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Ragni

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  1. Asked: October 27, 2021In: Class 12 Biology

    Wastewater treatment generates a large quantity of sludge, which can be treated by:

    Ragni
    Added an answer on October 27, 2021 at 10:57 am

    d. oxidation pond.

    d. oxidation pond.

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  2. Asked: October 27, 2021In: Class 12 Biology

    BOD of waste water is estimated by measuring the amount of:

    Ragni
    Added an answer on October 27, 2021 at 10:57 am

    d. oxygen consumption.

    d. oxygen consumption.

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  3. Asked: October 27, 2021In: Class 12 Biology

    The primary treatment of waste water involves the removal of:

    Ragni
    Added an answer on October 27, 2021 at 10:57 am

    b. stable particles

    b. stable particles

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  4. Asked: October 27, 2021In: Class 12 Biology

    Methanogenic bacteria are not found in:

    Ragni
    Added an answer on October 27, 2021 at 10:56 am

    d. activated sludge.

    d. activated sludge.

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  5. Asked: October 12, 2021In: Class 12 Biology

    What are the physical barriers of a cell in the protoplast fusion experiment? How are the barriers overcome?

    Ragni
    Added an answer on October 12, 2021 at 10:20 am

    Cell wall is the most important physical barrier in such experiments. This can be overcome by treatment with enzymes like cellulose and pectinase which have the ability to digest the cell wall and liberate the naked protoplast surrounded only by the cell membrane.

    Cell wall is the most important physical barrier in such experiments. This can be overcome by treatment with enzymes like cellulose and pectinase which have the ability to digest the cell wall and liberate the naked protoplast surrounded only by the cell membrane.

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  6. Asked: October 12, 2021In: Class 12 Biology

    Name the three improved characteristics of wheat that helped India achieve green revolution.

    Best Answer
    Ragni
    Added an answer on October 12, 2021 at 10:20 am

    i. Semi-dwarf nature ii. Quick yielding feature iii. High yielding feature iv. Disease resistant feature.

    i. Semi-dwarf nature
    ii. Quick yielding feature
    iii. High yielding feature
    iv. Disease resistant feature.

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  7. Asked: October 12, 2021In: Class 12 Biology

    How can we improve the success rate of fertilisation during artificial insemination in animal husbandry programmes?

    Best Answer
    Ragni
    Added an answer on October 12, 2021 at 10:20 am

    The technology is called MOET or Multiple Ovulation Embryo Transfer. During the procedure, a cow is given hormonal treatment so that more than one ovule (6-8 eggs) is produced per cycle. After mating or artificial insemination the embryos at 8-32 celled state are transferred to different surrogate mRead more

    The technology is called MOET or Multiple Ovulation Embryo Transfer. During the procedure, a cow is given hormonal treatment so that more than one ovule (6-8 eggs) is produced per cycle. After mating or artificial insemination the embryos at 8-32 celled state are transferred to different surrogate mother cows. The method has been successfully used for cattle, sheep, buffalo etc.

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