SolveItNCERT · CBSE Boards

NCERT Exemplar · Class 9 Science Improvement in Food Resources

49 questions · 49 still being checked

Multiple Choice Questions 11–17 (part 2 of 6)

  1. Exercise 11

    Which of the following are exotic breeds?
    (i)
    Brawn
    (ii)
    Jersey
    (iii)
    Brown Swiss
    (iv)
    Jersey Swiss
    (i)
    and (iii)
    (ii)
    and (iii)
    (i)
    and (iv)
    (ii)
    and (iv)

    Matches the book, not yet reviewed

    This working reaches the answer NCERT prints. It has not yet been read through by hand.

    NCERT’s answer
    (b)
    (b) (ii) and (iii). Jersey and Brown Swiss are exotic dairy breeds imported for high milk yield; "Brawn" and "Jersey Swiss" name no real breed.

  2. Exercise 12

    Poultry farming is undertaken to raise following
    (i)
    Egg production
    (ii)
    Feather production
    (iii)
    Chicken meat
    (iv)
    Milk production
    (i)
    and (iii)
    (i)
    and (ii)
    (ii)
    and (iii)
    (iii)
    and (iv)

    Matches the book, not yet reviewed

    This working reaches the answer NCERT prints. It has not yet been read through by hand.

    NCERT’s answer
    (a)
    (a) (i) and (iii). Poultry farming raises birds for eggs and chicken meat; feathers are a byproduct, not a rearing goal, and birds give no milk.

  3. Exercise 13

    Poultry fowl are susceptible to the following pathogens
    (a)
    Viruses
    (b)
    Bacteria
    (c)
    Fungi
    (d)
    All of the above

    Matches the book, not yet reviewed

    This working reaches the answer NCERT prints. It has not yet been read through by hand.

    NCERT’s answer
    (d)
    (d) All of the above. Poultry diseases are caused by viruses (Ranikhet disease, fowl pox), bacteria (fowl cholera) and fungi (aspergillosis) alike, so all three pathogen groups affect fowl.

  4. Exercise 14

    Which one of the following fishes is a surface feeder?
    (a)
    Rohus
    (b)
    Mrigals
    (c)
    Common carps
    (d)
    Catlas

    Matches the book, not yet reviewed

    This working reaches the answer NCERT prints. It has not yet been read through by hand.

    NCERT’s answer
    (d)
    (d) Catlas — it feeds at the surface; rohus feed in the mid-zone, mrigals and common carps at the bottom.Answer: (d) Catlas

  5. Exercise 15

    Animal husbandry is the scientific management of
    (i)
    animal breeding
    (ii)
    culture of animals
    (iii)
    animal livestock
    (iv)
    rearing of animals
    (i)
    , (ii) and (iii)
    (ii)
    , (iii) and (iv)
    (i)
    , (ii) and (iv)
    (i)
    , (iii) and (iv)

    Matches the book, not yet reviewed

    This working reaches the answer NCERT prints. It has not yet been read through by hand.

    NCERT’s answer
    (d)
    (d) (i), (iii) and (iv). Animal husbandry is the scientific management of animal livestock, covering their breeding and rearing.Answer: (d) (i), (iii) and (iv)

  6. Exercise 16

    Which one of the following nutrients is not available in fertilizers?
    (a)
    Nitrogen
    (b)
    Phosphorus
    (c)
    Iron
    (d)
    Potassium

    Matches the book, not yet reviewed

    This working reaches the answer NCERT prints. It has not yet been read through by hand.

    NCERT’s answer
    (c)
    (c) Iron. Chemical fertilizers supply the macronutrients nitrogen, phosphorus and potassium; iron is a micronutrient plants draw from the soil and from manure, not from fertilizers.

  7. Exercise 17

    Preventive and control measures adopted for the storage of grains include
    (a)
    strict cleaning
    (b)
    proper disjoining
    (c)
    fumigation
    (d)
    all of the above
    IMPROVEMENT IN FOOD RESOURCES

    Matches the book, not yet reviewed

    This working reaches the answer NCERT prints. It has not yet been read through by hand.

    NCERT’s answer
    (d)
    (d) All of the above. Safe grain storage needs strict cleaning of the produce and the godown, proper drying to bring down moisture, and fumigation against pests — each measure is necessary.