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Strategies for Enhancement in Food Production Class 12 Biology MCQs Pdf
Question 1.
The use of certain chemicals and radiation to change the base sequences of genes of crop plants is termed
(a) recombinant DNA technology
(b) transgenic mechanism
(c) mutation breeding
(d) gene therapy
Answer:
(c) mutation breeding
Question 2.
The scientific process by which crop plants are enriched with certain desirable nutrients is called
(a) crop protection
(b) breeding
(c) bio-fortification
(d) bio-remediation
Answer:
(c) bio-fortification
Question 3.
The term ‘totipotency’ refers to the capacity of a
(a) cell to generate whole plant
(b) bud to generate whole plant
(c) seed to germinate
(d) cell to enlarge in size
Answer:
(a) cell to generate whole plant
Question 4.
An explant is
(a) dead plant
(b) part of the plant
(c) part of the plant used in tissue culture
(d) part of the plant that expresses a specific gene
Answer:
(c) part of the plant used in tissue culture
Question 5.
The biggest constraint of plant breeding is
(a) availability of desirable gene in the crop and its wild relatives
(b) infrastructure
(c) trained manpower
(d) transfer of genes from unrelated sources
Answer:
(a) availability of desirable gene in the crop and its wild relatives
Question 6.
Lysine and tryptophan are
(a) proteins
(b) non-essential amino acids
(c) essential amino acids
(d) aromatic amino acids
Answer:
(c) essential amino acids
Question 7.
Micropropagation is
(a) propagation oif microbes in vitro
(b) propagation of plants in vitro
(c) propagation of cells in vitro
(d) growing plants on smaller scale
Answer:
(b) propagation of plants in vitro
Question 8.
Protoplast is
(a) another name for protoplasm
(b) an animal cell
(c) a plant cell without a cell wall
(d) a plant cell
Answer:
(c) a plant cell without a cell wall
Question 9.
To isolate protoplast, one needs
(a) pectiriase
(b) cellulase
(c) both pectinase and cellulase
(d) chitinase
Answer:
(c) both pectinase and cellulase
Question 10.
Which one of the following is a marine fish ?
(a) Rohu
(b) Hilsa
(c) Catla
(d) Common Carp
Answer:
(b) Hilsa
Question 11.
Which one of the following products of apiculture is used in cosmetics and polishes ?
(a) Honey
(b) Oil
(c) Wax
(d) Royal jelly
Answer:
(c) Wax
Question 12.
More than 70 percent of livestock population is in
(a) Denmark
(b) India
(c) China
(d) India and China
Answer:
(d) India and China
Question 13.
The agriculture sector of India employs about
(a) 50 percent of the population
(b) 70 percent of the population
(c) 30 percent of the population
(d) 60 percent of the population
Answer:
(d) 60 percent of the population
Question 14.
33 percent of India’s (Gross Domestic Product) comes from
(a) industry
(b) agriculture
(c) export
(d) small-scale cottage industries
Answer:
(b) agriculture
Question 15.
A collection of all the alleles of all the genes of a crop plant is called
(a) germplasm collection
(b) protoplasm collection
(c) herbarium
(d) somaclonal collection
Answer:
(a) germplasm collection
Question 16.
Which of the following is the “bird flu virus” ?
(a) H5N1
(b) Haemophilus influenzae
(c) HIV
(d) Rhino virus
Answer:
(a) H5N1
Question 17.
The infectious and contagious bacterial disease that affects cattle, buffaloes, horses, sheeps and goats is
(a) anthrax
(b) rinderpest
(c) tick fever
(d) necrosis
Answer:
(a) anthrax
Question 18.
Which of the following is an improved variety of chicken ?
(a) Jersey
(b) Leghorn
(c) Himgiri
(d) Kalyan Sona
Answer:
(b) Leghorn
Question 19.
Which of the following is a draught breed of Indian cattle ?
(a) Malvi
(b) Gir
(c) Sahiwal
(d) Deoni
Answer:
(a) Malvi
Question 20.
Holstein-Frisian, Brown Swiss and Jersey are all well known
(a) exotic breeds of cow
(b) exotic breeds of goat
(c) exotic breeds of poultry
(d) animal husbandry scientists
Answer:
(a) exotic breeds of cow
Question 21.
Which one of the following is a breed of cattle ?
(a) Ayrshire
(b) Ghagus
(c) Kadaknath
(d) Scampi
Answer:
(a) Ayrshire
Question 22.
Which one of the following poultry birds is not an English breed ?
(a) Sussex
(b) Australorp
(c) Orpington
(d) Minorca
Answer:
(b) Australorp
Question 23.
High milk yielding cross bred Frieswal cow is the product of
(a) Brown Swiss × Sahiwal
(b) Friesian × Sahiwal
(c) Holstein × Tharparkar
(d) Brown Swiss × Red sindhi
Answer:
(b) Friesian × Sahiwal
Question 24.
What strategy would you suggest if a person wants to evolve a pure line in an animal ?
(a) Cross-breeding
(b) Inbreeding
(c) Out-breeding
(d) artificia insemination
Answer:
(b) Inbreeding
Question 25.
Which of the following statements is not correct regarding inbreeding ?
(a) It is the breeding between animals of the same breed
(b) It decreases homozygosity
(c) It exposes harmful recessive genes
(d) It helps in accumulation os superior genes
Answer:
(b) It decreases homozygosity
Question 26.
Which of the following are common freshwater fishes ?
(a) Mackerel and rohu
(b) Rohu, common carp and Catla
(c) Hilsa and sardine
(d) None of these
Answer:
(b) Rohu, common carp and Catla
Question 27.
Which one of the following is a marine fish ?
(a) Rohu
(b) Hilsa
(c) Catla
(d) Common carp
Answer:
(b) Hilsa
Question 28.
Which one of the following is an exotic carp species ?
(a) Labeo rohita
(b) Crprinus carpio
(c) Labeo bata
(d) Cirrhinus mrigals
Answer:
(b) Crprinus carpio
Question 29.
Aquaculture is the rearing and management of
(a) molluscs and crustaceans
(b) only freshwater fishes
(c) economically useful aquatic plants and animals
(d) only aquatic plants
Answer:
(c) economically useful aquatic plants and animals
Question 30.
Aquaculture does not include
(a) prawns
(b) fishes
(c) silkworms
(d) shell fishery
Answer:
(c) silkworms
Question 31.
Which of the following is correctly matched ?
(a) Sericulture – Fish
(b) Aquaculture – Mosquito
(c) Apiculture – Honeybee
(d) Pisciculture – Silkmoth
Answer:
(c) Apiculture – Honeybee
Question 32.
Germplasm collection is the collection of
(a) germ cells
(b) semens
(c) plants/seeds with all the diverse alleles for all genes
(d) egg cells
Answer:
(c) plants/seeds with all the diverse alleles for all genes
Question 33.
Major percentage of India’s Gross Domestic Product is constituted by
(a) industry
(b) agriculture
(c) export
(d) small scale cottage industry
Answer:
(b) agriculture
Question 34.
The Noble Laureate, who developed semi-dwarf wheat varieties in Mexioc was
(a) Norman E. Borlaug
(b) herbert Boyer
(c) William Harvey
(d) Typhoid Mary
Answer:
(a) Norman E. Borlaug
Question 35.
Jaya and Ratna are the semi-dwarf varieties of
(a) wheat
(b) rice
(c) cowpea
(d) mustard
Answer:
(b) rice
Question 36.
The term “inbreeding depression” is related to
(a) increased fertility and productivity
(b) increased milk production
(c) reduced fertility & productivity
(d) reduced milk production
Answer:
(c) reduced fertility & productivity
Question 37.
Continued inbreeding, especially close inbreeding generally results in
(a) inbreeding depression
(b) inbreeding stimulation
(c) inbreeding hybridisation
(d) inbreeding mutation
Answer:
(a) inbreeding depression
Question 38.
The breeding carried out between animals of different breeds is called
(a) out-crossing
(b) cross-breeding
(c) inbreeding
(d) both (a) and (b)
Answer:
(b) cross-breeding
Question 39.
Which of the following is an example of a cross-breed ?
(a) Mule
(b) Hilsa
(c) Hisardale
(d) Sahiwal
Answer:
(c) Hisardale
Question 40.
Hisardale is a new breed of sheep developed in Punjab by crossing
(a) Merino ram and Bikaneri ewe
(b) Assel ram and White leghorn ewe
(c) Rhode Island ram and White leghorn ewe
(d) Cochin ram and Ghagus ewe
Answer:
(a) Merino ram and Bikaneri ewe
Question 41.
Crossing of individuals of two different species to produce a hybrid is called
(a) interspecific hybridisation
(b) intervarietal hybridisation
(c) intergeneric hybridisation
(d) intravarietal hybrididisation
Answer:
(a) interspecific hybridisation
Question 42.
Artificial insemination involves
(a) super ovulation
(b) semen collection
(c) egg collection
(d) embryo collection
Answer:
(b) semen collection
Question 43.
Artificial breeding of cattle is brough about by
(a) artiticial insemination
(b) super ovulation and embryo transplantation
(c) MOET
(d) all of these
Answer:
(d) all of these
Question 44.
MOET stands for
(a) Multiple Ovulation and Egg transfer Technology
(b) Multiple Ovary and Embryo Transfer Technology
(c) Multiple Ovulation Embryo Transfer Technology
(d) Method of Egg Transfer Technology
Answer:
(c) Multiple Ovulation Embryo Transfer Technology
Question 45.
Multiple ovulation embryo transfer technology is related to
(a) transfer of super embryo
(b) transfer of super eggs
(c) super ovulation and embryo transfer
(d) both (a) and (b)
Answer:
(c) super ovulation and embryo transfer
Question 46.
‘Lean meat’ is cosidered to be of high quality because it has
(a) lesser but easily digestible protein
(b) lesser lipid content
(c) more fat that makes the meqt softer
(d) longer table life due to lesser chances of infection
Answer:
(b) lesser lipid content
Question 47.
In livestock breeding experiments, which of the following stages is transferred to surrogate mothers ?
(a) Unfertilised eggs
(b) Fertilised eggs
(c) 8 to 32 celled embryo
(d) Frozen semen
Answer:
(c) 8 to 32 celled embryo
Question 48.
The term ‘apiculture’ refers to
(a) tissue culture
(b) pisciculture
(c) bee-keeping
(d) animal-keeping
Answer:
(c) bee-keeping
Question 49.
Which of the following plays a role in indigenous system of medicine ?
(a) Plant breeding
(b) Fisheries
(c) Apiculture
(d) MOET
Answer:
(c) Apiculture
Question 50.
In honey, the main constituent is
(a) calcium
(b) sugar
(c) protein
(d) water
Answer:
(b) sugar
Question 51.
Turnip mosaic disease is caused by
(a) bacteria
(b) viruses
(c) nematodes
(d) fungi
Answer:
(b) viruses
Question 52.
Which of the following dieases is caused by virus ?
(a) Tobacco mosaic
(b) Late blight of potato
(c) Turnip mosaic
(d) Both (a) and (c)
Answer:
(d) Both (a) and (c)
Question 53.
Which of the following is incorrectly matched ?
Disease Causative organism
(a) Black rot of crucifers Bacteria
(b) Brown rust of wheat Fungi
(c) Late blight of potato Virus
(d) Red rot of sugarcane Fungi
Answer:
(c) Late blight of potato Virus
Question 54.
Which of the following dieases is caused by bacteria ?
(a) Tobacco mosaic
(b) Black rot of crucifers
(c) Red rot of sugarcane
(d) Lata blight of potato
Answer:
(b) Black rot of crucifers
Question 55.
Black rust of wheat is caused by
(a) Puccinia
(b) Albugo
(c) Ustilagp
(d) Cystopus
Answer:
(a) Puccinia
Question 56.
Which of the following is incorrectly paired ?
(a) What – Himgiri
(b) Milch breed – Sahiwal
(c) Rice – Ratna
(d) Pusa Komal – Brassica
Answer:
(d) Pusa Komal – Brassica
Question 57.
The yellow mosaic virus-resistant variety “Parbhani Kranti” belongs to
(a) bhindi
(b) barley
(c) chilli
(d) cauliflower
Answer:
(a) bhindi
Question 58.
Hairy leaves of many plants are associated with
(a) resistance to insect pests
(b) resistance to viruses
(c) resistance to fungi
(d) resistance to bacteria
Answer:
(a) resistance to insect pests
Question 59.
Resistance to jassids in cotton plants and to cereal leaf beetle in wheat plants is due to
(a) biochemical characters
(b) physiological characters
(c) morphological characters
(d) none of these
Answer:
(c) morphological characters
Question 60.
Maize generates resistance against stem borers by having
(a) low aspartic acid, high nitrogen and sugar content
(b) low aspartic acid and sugar but high nitrogen content
(c) high aspartic acid and nitrogen but low sugar content
(d) high aspartic acid, low nitrogen and sugar content
Answer:
(d) high aspartic acid, low nitrogen and sugar content
Question 61.
Meristem culture is the cultue of
(a) axillary or apical shoot meristems
(b) anthers
(c) plant seeds
(d) young embryos
Answer:
(a) axillary or apical shoot meristems
Question 62.
A plant cell without cell wall is called
(a) proplast
(b) protoplast
(c) nucleoplasm
(d) explant
Answer:
(b) protoplast
Question 63.
A somatic hybird between potato and tomato is named as
(a) bomato
(b) mopato
(c) pomato
(d) topamo
Answer:
(c) pomato
Question 64.
The enzymes required to obtain protoplast from a plant cell are
(a) cellulase
(b) chitinase
(c) pectinase
(d) both (a) and (c)
Answer:
(d) both (a) and (c)
Question 65.
The chances of contracting bird flu from a properly cooked (above 100°C) chicken and egg are
(a) very high
(b) high
(c) moderate
(d) none
Answer:
(d) none
Question 66.
A group of animals which are related by descent and share many similarities are referred to as
(a) breed
(b) race
(c) variety
(d) species
Answer:
(a) breed
Question 67.
Inbreeding is carried out in animal husbandry because it
(a) increases vigour
(b) improves the breed
(c) increases heterozygosity
(d) increases homozygosity
Answer:
(d) increases homozygosity
Question 68.
Sonalikea and Kalyan Sona are varieties of
(a) wheat
(b) rice
(c) millet
(d) tobacco
Answer:
(a) wheat
Question 69.
Which one of the following is not a fungal disease?
(a) Rust of wheat
(b) Smut of Bajra
(c) Black rot of crucifers
(d) Red rot of sugarcane
Answer:
(c) Black rot of crucifers
Question 70.
Fungicides and antibiotics are chemicals that
(a) enhance yield and disease resistance
(b) kill pathogenic fungi and bacteria, respectively
(c) kill all pathogenic microbes
(d) kill pathogenic bacteria and fungi respectively
Answer:
(b) kill pathogenic fungi and bacteria, respectively
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