Please refer to MCQ Questions Chapter 9 Strategies for Enhancement in Food Production Class 12 Biology with answers provided below. These multiple-choice questions have been developed based on the latest NCERT book for class 12 Biology issued for the current academic year. We have provided MCQ Questions for Class 12 Biology for all chapters on our website. Students should learn the objective based questions for Chapter 9 Strategies for Enhancement in Food Production in Class 12 Biology provided below to get more marks in exams.
Chapter 9 Strategies for Enhancement in Food Production MCQ Questions
Please refer to the following Chapter 9 Strategies for Enhancement in Food Production MCQ Questions Class 12 Biology with solutions for all important topics in the chapter.
MCQ Questions Answers for Chapter 9 Strategies for Enhancement in Food Production Class 12 Biology
Question- Improved varieties of wheat suitable for Indian climates have been developed by
(a) hybridisation and mutation
(b) mutation and cloning
(c) cloning of polyploids
(d) polyploidy and hybridization
Answer
D
Question- Scientists are trying to get hybridisation between tomato and potato. The most accurate name would be
(a) topemo
(b) mopato
(c) pomato
(d) tomepo
Answer
A
Question- Triticum aestivum, the common bread wheat is
(a) Triploid with 21 chromosomes
(b) Tetraploid with 28 chromosomes
(c) Hexaploid with 42 chromosomes
(d) Diploid with 14 chromosomes
Answer
C
Question- Correct chronological order of the events occurring during callus culture is –
(a) Callus —> Cell division —> Explant —> Addition of cytokinin —> Acquire meristematic property
(b) Explant —> Callus —> Cell division —> Addition of cytokinin —> Cells acquire meristematic property
(c) Explant —> Cell dvision —> Callus —> Addition of cytokinin —> Cells acquire meristematic property
(d) Callus —> Explant —> Cell division —> Addition of cytokinin —> Cells acquire property
Answer
A
Question- Somaclonal variation can be obtained by
(a) Application of colchicine
(b) Hybridisation
(c) Irradiation with gamma rays
(d) Tissue culture
Answer
B
Question- Hybrid vigour is eroded through –
(a) Repeated crossing
(b) Repeated selection
(c) Vegetative propagation
(d) Repeated selfing
Answer
D
Question- Pomato
(a) is produce by hybridization between pome and tomato
(b) is the product of cross fertilization
(c) has all the desired combination of characteristics for its commercial utilization
(d) does not have all the desired combination of characteristics for its commercial utilization
Answer
A
Question- Mutations in red grained Sonara 64 variety of wheat resulted in the amber grain colour mutant
(a) Larma Rojo 64A
(b) Sharbati Sonara
(c) PusaLerma
(d) K-68
Answer
D
Question- Which of the following is the conventional method of plant breeding for disease resistance?
(a) polyploidy
(b) genetic engineering
(c) hybridisation
(d) mutation breeding
Answer
B
Question- Which of the following in linked to the discovery of Bordeaux mixture as a fungicide.
(a) Loose smut of wheat
(b) Black rust of wheat
(c) Bacterial leaf blight of rice
(d) Downy mildew of gropes
Answer
D
Question- Aims of plant breeding are to produce
(a) Disease-free varieties
(b) High-yielding varieties
(c) Early maturing varieties
(d) All the above
Answer
C
Question- Which of the following methods of breeding increases the chance of homozygosity?
(a) in breeding
(b) out breeding
(c) out crossing
(d) cross breeding
Answer
C
Question- Farmers is a particular region are concerned that premature yellowing leaves of pulse crop night decrease the yield. Which treatment could be beneficial to obtain maximum seed yield.
(a) Frequent imitator of crop
(b) Treatment of the plants with cytokinin along with a small dose of nitrogen fertilizer
(c) Removal of all yellow leaves and spray the remaining green leaves with 2, 5 trichloropherony acetic acid
(d) Application of rin and magnesium pramole synthesis of chlorophyll
Answer
B
Question- Selection of homozygous plant is
(a) Mass selection
(b) Pure line selection
(c) Mixed selection
(d) None of the above
Answer
B
Question- Culture of isolated microspores results in the formation of
(a) Microgametophyte
(b) Male gametes
(c) Haploid embryoids
(d) Heterozygous embryoids
Answer
C
Question- Mature embryos are mostly
(a)Autotrophic
(b) Heterotrophic
(c) Parasitic
(d) Symbiotic
Answer
C
Question- The colour of high yielding Mexican wheats were not liked by the Indians. It was originally red grained. Their cultivation was adopted in India on large scale only when exposure to gamma radiations converted them to amber grained. Which of following methods of plant-breeding has been put into practise in the given case?
(a) polyploid breeding
(b) interspecific hybridisation
(c) genetic engineering
(d) mutation breeding
Answer
D
Question- Choose the correct answer
(a) Terminator genes helps in terminating seed germination
(b) Axenic culture is pure culture without any contamination
(c) Androgenic haploidy makes use of anther cells
(d) All of the above
Answer
A
Question- The ability of plant cell to give rise to an entire new plant is called
(a) Symmetry
(b) Differentiation
(c) Totipotency
(d) Dedifferentiation
Answer
B
Question- The new varieties of plants are produced by
(a) Introduction and selection
(b) Mutation and selection
(c) Selection and hybridization
(d) Introduction and Mutation
Answer
C
Question- Norman Borlang known as “Father of Seen Revolution” has developed new cultivating crops of-
(a) Paddy
(b) Rice
(c) Wheat
(d) Sugarcane
Answer
B
Question- A novel technique devised to produce vast quantities of strong and healthy plantlets by rapid vegetative multiplication under controlled conditions.
(a) Anther culture
(b) Polymerase Chain Reaction
(c) Micropropagation
(d) Protoplast fusion
Answer
A
Question- Central Sugar cane breeding research institute is situated at
(a) Lucknow
(b) Delhi
(c) Coimbatore
(d) Bhopal
Answer
C
Question- Haploid plantlets can be produced by
(a) Pollen culture
(b) Cotyledon culture
(c) Embryo culture
(d) Meristem culture
Answer
D
Question- The technique of obtaining large number of plantlets by tissue culture method is called
(a) Organ culture
(b) Micropropagation
(c) Macropropagation
(d) Plantlet culture
Answer
B
Question- Sterilization means
(a) Inactivation of microorganisms
(b) Temporary destruction of microorganisms
(c) Complete destruction or killing of microorganisms
(d) Induction of immunity in microorganisms
Answer
A
Question- The substance used for solidification of nutrient medium is
(a) 2,4-D
(b) Agaragar
(c) Alfa-alfa
(d) Yeast
Answer
A
Question- Who gave the idea that every plant cell is totipotent
(a) PR. White
(b) E.G. Cocking
(c) F.C. Steward
(d) G. Liaberlandt
Answer
D
Question- The emasculation of flower buds is achieved by the removal of
(a) Stigma
(b) Anthers
(c) Sepals
(d) Corolla
Answer
A
Question- A transgenic food crop which may Lelp in solving the problem of night blindress in developing countries is
(a) Bt. soybean
(b) Golden rice
(c) Flavrasve tomatoes
(d) star link maize
Answer
D
Question- Which one of the following is not a secondary metabolite?
(a) Resins
(b) Essential oils
(c) Amino acids
(d) Tannins
Answer
C
Question- Hybrid vigour is mostly due to
(a) Heterozygosity
(b) Superiority of all the genes
(c) Homozygosity of pure characters
(d) Mixing up of cytoplasm of the male with that of female exclusively
Answer
B
Question- ‘Norin gene1 of dwarfness in wheat originated through spontaneous mutation in
(a) India
(b) Japan
(c) Mexico
(d) U.S.S.R.
Answer
B
Question- Blindness is presented by use of which crop n poor correctly ?
(a) Golden rice
(b) Wheat
(c) Maize
(d) Oat
Answer
C
Question- An unorganised mass of cells is called
(a) Totipotent
(b) Explant
(c) Callus
(d) Corax
Answer
B
Question- In tissue culture medium, the embryoids formed from pollen grains is due to
(a) Cellular totipotency
(b) Organogenesis
(c) Double fertilization
(d) Test tube culture
Answer
C
Question- In the hexaploid wheat, the haploid (n) and basic (x) number of chromosomes are
(a) n = 21 andx = 21
(b) n = 21 and x= 14
(c) n = 21 and x = 7
(d) n = 7 and x = 21
Answer
C
Question- Select the correct statements –
(a) A gene bank should not be regarded as a plant museum.
(b) The germplasm, stored in the gene bank are actively utilized by breeders to develop novel varieties.
(c) The phase between 1960-1970 is often called the Green Revolution.
(d) All of the above
Answer
B
Question- In hybridisation, the haploids combine the advantages of
(a) Recombination
(b) Segregation
(c) Fixation
(d) All of them
Answer
A
Question- Which of the following is the consequence of plant diseases?
(a) Reduced yield and lower qu ty of produce
(b) Reduced yield, lower qu ty of produce and increased cost of production –
(c) Reduced yield, lower qu ty of produce and poisonous produce
(d) Reduced yield, lower qu ty of produce, increased cost of production and poisonous produce
Answer
C
Question- Pure line breeds refer to
(a) Homozygosity and independent assortment
(b) Homozygosity only
(c) Heterozygosity
(d) Heterozygosity and linkage
Answer
B
Question- Most cultivated plants are
(a) Autopolyploids
(b) Allopolyploids
(c) Aneuploids
(d) Haploids
Answer
D
Question- Desired improved varieties of economically useful crops are raised by
(a) Natural selection
(b) Hybridisation
(c) Mutation
(d) Biofertiliser
Answer
B
Question- A self fertilizing trihybrid plant forms
(a) 4 different gametes and 16 different zygotes
(b) 8 different gametes and 16 different zygotes
(c) 8 different gametes and 32 different zygotes
(d) 8 different gametes and 64 different zygotes
Answer
B
Question- What is the common name of Triticum monococcum?
(a) EmmerWheat
(b) WildEinkorn
(c) Domesticated Einkorn
(d) Common bread wheat
Answer
B
Question- Which one of the following is a viral disease of poultry?
(a) Coryza
(b) New Castle disease (Rani khet)
(c) Pasteurellosis
(d) Salmonellosis
Answer
A
Question- A cybrid is a hybrid carrying
(a) cytoplasms of two different plants .
(b) genomes and cytoplasms of two different plants
(c) cytoplasms of two different plants and genome of one plant
(d) genomes of two different plants
Answer
A
Question- In maize, hybrid vigour is exploited by
(a) Crossing of two hybrid parental lines
(b) Harvesting seeds from the most productive plants
(c) Inducing mutations
(d) Bombarding the seeds with DMA
Answer
C
Question- A major application of embryo culture is
(a) Production of embryoids
(b) Overcoming hybridisation barriers
(c) Induction of somaclonal variations
(d) Clonal propagation
Answer
D
Question- India’s wheat yield revolution in the 1960s was possible primarily due to
(a) Increased chlorophyll content
(b) Mutations resulting in plant height reduction
(c) Quantitative trait mutations
(d) Hybrid seeds
Answer
A
Question- Embryo rescue is used for
(a) Establishing suspension culture
(b) Recovery of interspecific hybrids / difficult hybrids
(c) Somatic hybridization
(d) Haploid production
Answer
A
Question- Most nutritious among the following is
(a) Wheat
(b) Maize
(C) Bajra
(d) Rice
Answer
C
Question- Colchicine brings about
(a) Chromosome aberrations
(b) Duplication of chromosomes
(c) Gene mutations
(d) Quick replication
Answer
A

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