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Strategies for Enhancement in Food Production: Class-XII


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NEET PYQs on Strategies for Enhancement in Food Production: Class-XII


Which one of the following NOT an advantage of inbreeding?

NEET-2023 [Strategies-for-Enhancement-in-Food-Production] [class-xii ]

  • It decreases the productivity of inbred population, after continuous inbreeding.
  • It decreases homozygosity.
  • It exposes harmful recessive genes that are eliminated by selection.
  • Elimination of less desirable genes and accumulation of superior genes takes place due to it.
  • Correct Option: A  [ It decreases the productivity of inbred population, after continuous inbreeding. ]

    Remark:

Breeding crops with higher levels of vitamins and minerals or higher proteins and healthier fats is called:

NEET-2022 [Strategies-for-Enhancement-in-Food-Production] [class-xii ]

  • Bio-remediation
  • Bio-fortification
  • Bio-accumulation
  • Bio-magnification
  • Correct Option: B  [ Bio-fortification ]

    Remark:

Mutations in plant cells can be induced by:

NEET-2021 [Strategies-for-Enhancement-in-Food-Production] [class-xii ]

  • Kinetin
  • Infrared rays
  • Gamma rays
  • Zeatin
  • Correct Option: C  [ Gamma rays ]

    Remark:

Match List-I with List-II.

List-I List-II
(A)Protoplast fusion (I)Totipotency
(B)Plant tissue culture (II)Pomato
(C)Meristem culture (III)Somaclones
(D)Micropropagation (IV)Virus free plants
Choose the correct answer from the options given below:

NEET-2021 [Strategies-for-Enhancement-in-Food-Production] [class-xii ]

  • A-II, B-I, C-IV, D-III
  • A-III, B-IV, C-I, D-II
  • A-IV, B-III, C-II, D-I
  • A-III, B-IV, C-II, D-I
  • Correct Option: A  [ A-II, B-I, C-IV, D-III ]

    Remark:

Which of the following is not an objective of Biofortification in crops?

NEET-2021 [Strategies-for-Enhancement-in-Food-Production] [class-xii ]

  • Improve protein content
  • Improve resistance to diseases
  • Improve vitamin content
  • Improve micronutrient and mineral content
  • Correct Option: B  [ Improve resistance to diseases ]

    Remark:

Which of the following is not a step in Multiple Ovulation Embryo Transfer Technology (MOET)?

NEET-2021 [Strategies-for-Enhancement-in-Food-Production] [class-xii ]

  • Cow is administered hormone having LH like activity for super ovulation
  • Cow yields about 6-8 eggs at a time
  • Cow is fertilized by artificial insemination
  • Fertilized eggs are transferred to surrogate mothers at 8-32 cell stage
  • Correct Option: A  [ Cow is administered hormone having LH like activity for super ovulation ]

    Remark:

By which method was a new breed 'Hisardale' of sheep formed by using Bikaneri ewes and Marino rams?

NEET-(Sept)2020 [Strategies-for-Enhancement-in-Food-Production] [class-xii ]

  • Out crossing
  • Mutational breeding
  • Cross breeding
  • Inbreeding
  • Correct Option: C  [ Cross breeding ]

    Remark:

Inbreeding depression is:

NEET-(Oct)2020 [Strategies-for-Enhancement-in-Food-Production] [class-xii ]

  • Reduced motility and immunity due to close inbreeding
  • Decreased productivity due to mating of superior male and inferior female
  • Decrease in body mass of progeny due to continued close inbreeding
  • Reduced fertility and productivity due to continued close inbreeding
  • Correct Option: D  [ Reduced fertility and productivity due to continued close inbreeding ]

    Remark:

What triggers activation of protoxin to active Bt toxin of Bacillus thuringiensis in boll worm?

NEET-2019 [Strategies-for-Enhancement-in-Food-Production] [class-xii ]

  • Body temperature
  • Moist surface of midgut
  • Acidic pH of stomach
  • Alkaline pH of gut
  • Correct Option: D  [ Alkaline pH of gut ]

    Remark:

Select the incorrect statement:

NEET-2019 [Strategies-for-Enhancement-in-Food-Production] [class-xii ]

  • Inbreeding selects harmful recessive genes that reduce fertility and productivity
  • Inbreeding increases homozygosity
  • Inbreeding is essential to evolve purelines in any animal
  • Inbreeding helps in accumulation of superior genes elimination of undesirable genes
  • Correct Option: A  [ Inbreeding selects harmful recessive genes that reduce fertility and productivity ]

    Remark: