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Strategies for Enhancement in Food Production: NEET MCQ Questions [100+ Solved]

Below are the NEET MCQ questions on Class 12 Biology Chapter “Strategies for Enhancement in Food Production” based on the NCERT textbook. Solve the below free NEET mock test for a better understanding of the various topics. 100+ important MCQs (multiple choice questions) are given in this NEET question bank.

“Strategies for Enhancement in Food Production” is the 9th chapter in the unit “Biology in Human Welfare” of class XII or class 12th Biology NCERT. Do note that NEET (which is conducted by NTA) is based on NCERT textbooks so they are a must-have. You can also download PDFs of NCERT textbooks.

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Important Questions For NEET:

You can also answer the following NEET quiz on a sheet of paper. Once you’ve completed the NEET online test series, cross-verify and calculate your score, and evaluate your performance according to the scored marks. Calculate your score by multiplying 4 by the number of correct attempts and subtracting it from the number of incorrect attempts.

I hope this will help you practice better for the NEET exam. All the best!


  1. Shahtoosh, the world’s most expensive and finest wool, comes from which endangered animal?
    (a) Chiru
    (b) Nilgai
    (c) Cheetal
    (d) Kashmiri goat

(d) Kashmiri goat

  1. Which fish is used in the biological control of mosquitoes?
    (a) Gambusia
    (b) Hilsa hilsa
    (c) Latimeria
    (d) Gold Fish

(a) Gambusia

  1. What breed produces the world’s most prized wool, the ‘Pashmina’?
    (a) goat
    (b) sheep
    (c) goat-sheep cross
    (d) Kashmir sheep-Afghan sheep cross

(a) goat

  1. The care, breeding and management of what does animal husbandry deal with?
    (a) Domesticated animals
    (b) Fishes
    (c) Honey bees and silkworms
    (d) All of these

(d) All of these

  1. What breeds are Murrah, Mehsana, and Jaffarbadi?
    (a) Buffalo
    (b) Cow
    (c) Cattle
    (d) Horse

(a) Buffalo

  1. Which species of bees are most commonly kept in India?
    (a) Apis florae
    (b) Apis mellifera
    (c) Apis dorsata
    (d) Apis indica

(d) Apis indica

  1. Which of these is an exotic Indian fish?
    (a) Catla catla
    (b) Heteropneustes fossilis
    (c) Cyprinus carpio
    (d) Labeo rohita

(c) Cyprinus carpio

  1. What are worker bees?
    (a) Fertile males
    (b) Fertile females
    (c) Sterile females
    (d) Sterile males

(c) Sterile females

  1. Where were dwarf varieties of wheat brought from Mexico to India?
    (a) Sonora-64 and Sonalika
    (b) Sonora-64 and Lerma Roja-64
    (c) Sharbati Sonora and Pusa Lerma
    (d) Sonalika

(b) Sonora-64 and Lerma Roja-64

  1. What does pure line breed refer to?
    (a) Heterozygosity only
    (b) Homozygosity only
    (c) Heterozygosity and linkage
    (d) Homozygosity and self-assortment

(b) Homozygosity only

  1. What is a man-made allopolyploid cereal crop?
    (a) Hordeum vulgare
    (b) Raphano brassica
    (c) Triticale
    (d) Zea mays

(c) Triticale

  1. A piece of sterile plant tissue to be used under aseptic conditions for tissue culture is?
    (a) Inoculant
    (b) Explant
    (c) Clone
    (d) Somaclone

(b) Explant

  1. Chocolate is made from the cocoa plant. What part of the plant is used to extract it?
    (a) Flower
    (b) Fruit
    (c) Seeds
    (d) Bark

(c) Seeds

  1. Hisardale sheep are a new breed developed in Punjab by mating a superior male of one breed with a superior female of another. Choose the breeding technique from the options below.
    (a) Inbreeding
    (b) Outcrossing
    (c) Outbreeding
    (d) Crossbreeding

(d) Crossbreeding

  1. The following reasons contribute to biodiversity loss.
    (i) Habitat loss and fragmentation
    (ii) Co-extinction
    (iii) Over-exploitation
    (iv) Alien species invasion
    Correctly identify the reasons.
    (a) (i) and (ii)
    (b) (i), (ii) and (iii)
    (c) (ii), (iii) and (iv)
    (d) (i), (ii), (iii) and (iv)

(d) (i), (ii), (iii) and (iv)

  1. How can somaclonal variation be obtained?
    (a) application of colchicine
    (b) irradiation with gamma rays
    (c) tissue culture
    (d) hybridisation

(c) tissue culture

  1. Where does somaclonal variation appear?
    (a) organisms produced through somatic hybridization.
    (b) plants growing in highly polluted conditions.
    (c) apomictic plants.
    (d) tissue culture raised plants

(d) tissue culture raised plants

  1. Among the following, which is a viral disease of poultry birds?
    (a) Anthrax
    (b) Ranikhet
    (c) Coccidiosis
    (d) None of these

(b) Ranikhet

  1. In terms of the annual production of the world’s top five crops,
    (a) all five belong to the family Poaceae (Gramineae)
    (b) four belong to Poaceae (Gramineae) and one to Leguminosae
    (c) four belong to Poaceae (Gramineae) and one to Solanaceae
    (d) three belong to Poaceae (Gramineae), one to Leguminosae and one to Solanaceae.

(c) four belong to Poaceae (Gramineae) and one to Solanaceae

  1. What is the fastest method of plant breeding?
    (a) Introduction
    (b) Selection
    (c) Hybridization
    (d) Mutation breeding

(d) Mutation breeding

  1. The plant breeding program aims to produce what?
    (a) disease-free varieties.
    (b) high yielding varieties.
    (c) early maturing varieties.
    (d) All of these

(d) All of these

  1. When creating genetic variation, which of the following is most commonly used?
    (a) Polyploidy
    (b) Hybridisation
    (c) Mutation
    (d) Genetic engineering

(b) Hybridisation

  1. Transgenic plants are
    (a) produced by a somatic embryo in an artificial medium.
    (b) generated by introducing foreign DNA into a cell and regenerating a plant from that cell.
    (c) produced after protoplast fusion in an artificial medium.
    (d) grown in an artificial medium after hybridization in the field.

(b) generated by introducing foreign DNA into a cell and regenerating a plant from that cell.

  1. Chemically, silk is?
    (a) Cellulose
    (b) Resin
    (c) Protein
    (d) Lipid

(c) Protein

  1. The first man-made cereal crop, triticale, was created by crossing wheat with?
    (a) pearl millet
    (b) sugarcane
    (c) barley
    (d) rye

(d) rye

  1. Outbreeding results in a reduction in what?
    (a) heterozygosity
    (b) homozygosity
    (c) population mean
    (d) All of these

(b) homozygosity

  1. What is the chemical produced by host plants when they are infected as a defence reaction to pathogens?
    (a) phytotoxin
    (b) toxin
    (c) phytotron
    (d) phytoalexins

(d) phytoalexins

  1. What is Auxanometer used to measure?
    (a) length
    (b) respiration
    (c) transpiration
    (d) ascent of sap

(a) length

  1. What is crop rotation used to increase?
    (a) soil fertility
    (b) pore size and soil particle
    (c) the organic content of the soil
    (d) the viscosity of soil water

(a) soil fertility

  1. Recently, which of the following methods has been used to increase the productivity of super milk cows?
    (a) Artificial insemination by a pedigreed bull only
    (b) Superovulation of a high production cow only
    (c) Embryo transplantation only
    (d) A combination of superovulation, artificial insemination and embryo transplantation into a ‘carrier cow’ (surrogate mother)

(d) A combination of superovulation, artificial insemination and embryo transplantation into a ‘carrier cow’ (surrogate mother)

  1. How are the new varieties of plants produced?
    (a) selection and hybridization
    (b) mutation and selection
    (c) introduction and mutation
    (d) selection and introduction

(a) selection and hybridization

  1. What chemical induces polyploidy in plant cells?
    (a) 2, 4-dichloro phenoxy acetic acid
    (b) Rifampicin
    (c) Cytokine
    (d) Colchicine

(d) Colchicine

  1. What are the three crops that contribute the most to global food grain production?
    (a) Wheat, rice and maize
    (b) Wheat, rice and barley
    (c) Wheat, maize and sorghum
    (d) Rice, maize and sorghum

(a) Wheat, rice and maize

  1. What is the best method for obtaining virus-free plants through tissue culture?
    (a) Embryo rescue
    (b) Anther culture
    (c) Meristem culture
    (d) Protoplast culture

(c) Meristem culture

  1. Farmers in a particular region were concerned about a possible decrease in yield from premature yellowing of leaves of pulse crops. What would be the best treatment to maximize seed yield?
    (a) Treatment of the plants with cytokinins along with a small dose of nitrogenous fertilizer
    (b) Removal of all yellow leaves and spraying the remaining green leaves with 2, 4, 5- trichlorophenoxy acetic acid
    (c) Application of iron and magnesium to promote the synthesis of chlorophyll
    (d) Frequent irrigation of the crop

(c) Application of iron and magnesium to promote the synthesis of chlorophyll

  1. Which of the following statements about honey bees is correct?
    (a) Apis indica is the largest wild honey bee in India
    (b) Honey is predominantly sucrose and arabinose
    (c) Beewax is a waste product of honey bees
    (d) Communication in honey bees was discovered by Karl Von Frisch

(d) Communication in honey bees was discovered by Karl Von Frisch

  1. In crop fields and sandy soils, which of the following plants is used as green manure?
    (a) Dichanthium annulatum and Azolla nilotica
    (b) Crotalaria juncea and Alhagi camelorum
    (c) Calotropis procera and Phyllanthus niruri
    (d) Saccharum munja and Lantana camara

(b) Crotalaria juncea and Alhagi camelorum

  1. Why is bagging done?
    (a) achieve the desired pollination.
    (b) prevent contamination from unwanted pollen.
    (c) avoid self-pollination.
    (f) avoid cross-pollination.

(b) prevent contamination from unwanted pollen.

  1. The wheat yield revolution in India in the 1960s was mainly the result of what?
    (a) hybrid seeds
    (b) increased chlorophyll content
    (c) mutations resulting in plant height reduction
    (d) quantitative trait mutations

(c) mutations resulting in plant height reduction

  1. Which is the most likely reason for the development of resistance against pesticides in insects damaging crops?
    (a) random mutations
    (b) genetic recombination
    (c) directed mutations
    (d) acquired heritable changes

(a) random mutations

  1. What causes the curing of tea leaves?
    (a) mycorrhiza
    (b) viruses
    (c) fungi
    (d) bacteria

(d) bacteria

  1. By culturing what can haploid cultures be obtained?
    (a) pollen grains
    (b) embryo
    (c) shoot apex
    (d) root apex

(a) pollen grains

  1. Bean seeds were planted on a windowsill in the sun. When the plants grew, their stems bent toward the window. What caused this bending?
    (a) unequal distribution of auxin in the stem.
    (b) unequal distribution of a neurotransmitter in the stem.
    (c) equal distribution of auxin in the stem.
    (d) equal distribution of a neurotransmitter in the stem.

(a) unequal distribution of auxin in the stem.

  1. Which of the following is a viral poultry disease?
    (a) Coryza
    (b) New castle disease
    (c) Pasteurellosis
    (d) Salmonellosis

(b) New castle disease

  1. A scion is grafted to a stock. Fruit quality will depend on the genotype of?
    (a) stock
    (b) scion
    (c) both stock and scion
    (d) neither stock nor scion

(b) scion

  1. Before placing an explant in culture, it must be disinfected. How is this done?
    (a) autoclaving
    (b) ultra-violet rays
    (c) Clorox or hypochlorite
    (d) X-rays

(c) Clorox or hypochlorite

  1. What results in the formation of embryoids from pollen grains in a tissue culture medium?
    (a) cellular totipotency
    (b) organogenesis
    (c) double fertilization
    (d) test-tube culture

(a) cellular totipotency

  1. The usual breeding techniques rarely result in intergeneric crosses. Which of the following techniques could lead to success in this regard?
    (a) Embryo culture
    (b) Hybridoma technology
    (c) Somatic hybridization
    (d) None of these

(a) Embryo culture

  1. A phytotron is used for what?
    (a) grow plants under disease-free conditions.
    (b) conserve endangered species of plants.
    (c) grow plants under controlled conditions.
    (d) induce mutations.

(c) grow plants under controlled conditions.

  1. Essential oils are those that
    (a) are essential to the plant itself
    (b) are used as lubricants
    (c) produce perfumes
    (d) are essential for human beings

(c) produce perfumes

  1. What is coconut water rich in?
    (a) auxins
    (b) gibberellins
    (c) abscisic acid
    (d) cytokinin

(d) cytokinin

  1. Choose the pair of biofertilizers.
    (a) Azolla and BGA
    (b) Nostoc and legume
    (c) Rhizobium and grasses
    (d) Salmonella & E. coli

(a) Azolla and BGA

  1. Why is Azolla used as a biofertilizer?
    (a) multiplies very fast to produce massive biomass
    (b) has an association with nitrogen-fixing Rhizobium
    (c) has an association with nitrogen-fixing Cyanobacteria
    (d) has an association with mycorrhiza

(c) has an association with nitrogen-fixing Cyanobacteria

  1. Pruning of plants promotes branching because the axillary buds become sensitized to what?
    (a) ethylene
    (b) gibberellin
    (c) cytokinin
    (d) indole acetic acid

(c) cytokinin

  1. A hybrid named cybrid carries what?
    (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.

(c) cytoplasms of two different plants and genome of one plant.

  1. What is the name of the method of producing a large number of plantlets by tissue culture method?
    (a) Plantlet culture
    (b) Organ culture
    (c) Micropropagation
    (d) Macropropagation

(a) Plantlet culture

  1. What is antisense technology?
    (a) A cell displaying a foreign antigen used for the synthesis of antigens
    (b) Production of somaclonal variants in tissue cultures
    (c) When a piece of RNA that is complementary in a sequence is used to stop the expression of a specific gene
    (d) RNA polymerase producing DNA

(c) When a piece of RNA that is complementary in a sequence is used to stop the expression of a specific gene

  1. Which of these is not used as a biopesticide?
    (a) Trichoderma harzianum
    (b) Nuclear Polyhedrosis Virus (NPV)
    (c) Xanthomonas campestris
    (d) Bacillus thuringiensis

(c) Xanthomonas campestris

  1. Which of the following methods can be used to produce new and better varieties of plants?
    (a) Selection
    (b) Grafting
    (c) Hybridization
    (d) Hybridization followed by selection

(d) Hybridization followed by selection

  1. Which of the following proved effective in biologically controlling nematode diseases in plants?
    (a) Pisolithus tinctorius
    (b) Pseudomonas cepacia
    (c) Gliocladium virens
    (d) Paecilomyces lilacinus

(d) Paecilomyces lilacinus

  1. How were Datura haploids produced?
    (a) Meristem culture
    (b) Anther culture
    (c) Embryo culture
    (d) Protoplast culture

(b) Anther culture

  1. How is sterilization of tissue culture medium done?
    (a) Autoclaving of a medium at 120°C for 15 minutes
    (b) Filtering the medium through a fine sieve
    (c) Mixing the medium with antifungal agents
    (d) Keeping the medium at –20°C

(a) Autoclaving of a medium at 120°C for 15 minutes

  1. How can parthenocarpic tomato fruits be produced?
    (a) treating the plants with low concentrations of gibberellic acid and auxins
    (b) raising the plants from vernalized seeds
    (c) treating the plants with phenylmercuric acetate
    (d) removing androecium of flowers before pollen grains are released

(a) treating the plants with low concentrations of gibberellic acid and auxins

  1. A group of animals that share many similarities and are related by descent is known as?
    (a) breed
    (b) race
    (c) variety
    (d) species

(a) breed

  1. Why is inbreeding carried out in animal husbandry?
    (a) increases vigour
    (b) improve the breed
    (c) increases heterozygosity
    (d) increases homozygosity

(d) increases homozygosity

  1. What varieties are Sonalika and Kalyan Sona?
    (a) wheat
    (b) rice
    (c) millet
    (d) tobacco

(a) wheat

  1. Which 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

(c) Black rot of crucifers

  1. The meristematic tissues in both apical and axillary buds are free of the virus in virus-infected plants because
    (a) the dividing cells are virus-resistant
    (b) meristems have antiviral compounds
    (c) the cell division of meristems is faster than the rate of viral multiplication
    (d) viruses cannot multiply within meristem cell(s)

(c) the cell division of meristems is faster than the rate of viral multiplication

  1. Some states in South India grow 2-3 crops of rice each year. This is due to what agronomic feature?
    (a) shorter rice plant
    (b) better irrigation facilities
    (c) early yielding rice variety
    (d) disease-resistant rice variety

(c) early yielding rice variety

  1. In India, which one of the following pairs of organisms is exotic species?
    (a) Lantana camara, water hyacinth
    (b) Water hyacinth, Prosopis cinereria
    (c) Nile perch, Ficus religiosa
    (d) Ficus religiosa, Lantana camara

(a) Lantana camara, water hyacinth

  1. How can roots be induced in tissue culture?
    (a) Lower concentration of cytokinin and higher concentration of auxins
    (b) Only cytokinin and no auxins
    (c) No cytokinin and only auxins
    (d) Higher concentration of cytokinin and lower concentration of auxins

(a) Lower concentration of cytokinin and higher concentration of auxins

  1. What is hardening in tissue culture?
    (a) Keeping at 30-50°C temperature for about 30 minutes
    (b) Acclimatisation of tissue culture plants slowly before growing in the field
    (c) Plunging the vials into the water at 37-40°C
    (d) None of the above

(b) Acclimatisation of tissue culture plants slowly before growing in the field

  1. What is the name of the entire collection (of plants/ seeds) with all the various alleles for all genes in a given crop in plant breeding programs?
    (a) cross-hybridisation among the selected parents.
    (b) evaluation and selection of parents.
    (c) germplasm collection
    (d) selection of superior recombinants.

(c) germplasm collection

  1. A transgenic improved variety of basmati rice
    (a) does not require chemical fertilizers and growth hormones
    (b) gives high yield and is rich in vitamin A
    (c) is completely resistant to all insect pests and diseases of paddy
    (d) gives high yield but has no characteristic aroma

(b) gives high yield and is rich in vitamin A

  1. What is the mismatched pair in the following list?
    (a) Apis indica – honey
    (b) Kenia lacca – lac
    (c) Bombyx mori – silk
    (d) Pila globosa – pearl

(d) Pila globosa – pearl

  1. Compared to a bull, a bullock is docile. Why?
    (a) higher levels of cortisone
    (b) lower levels of blood testosterone
    (c) lower levels of adrenaline/ noradrenaline in its blood
    (d) higher levels of thyroxine.

(b) lower levels of blood testosterone

  1. What varieties are the Jaya and Ratna developed for the green revolution in India?
    (a) maize
    (b) rice
    (c) wheat
    (d) bajra

(b) rice

  1. The process of RNA interference has been used to develop plants that are resistant to?
    (a) nematodes
    (b) fungi
    (c) viruses
    (d) insects

(a) nematodes

  1. A small amount of parental tissue can be used to produce an infinite number of new plants through the tissue culture technique. This technique is economically important in raising?
    (a) Variants through picking up somaclonal variations
    (b) Genetically uniform population identical to the original parent
    (c) Homozygous diploid plants
    (d) Development of new species

(b) Genetically uniform population identical to the original parent

  1. Choose the right statements
    1 Protoplasts of different cells of the same plant are fused.
    2 Protoplasts from cells of different species can be fused.
    3 Treatment of cells with cellulase and pectinase is mandatory.
    4 The hybrid protoplast contains characters of only one parental protoplast.
    (a) (4) and (3)
    (b) (1) and (2)
    (c) (3) and (2)
    (d) (2) and (3)

(d) (2) and (3)

  1. How many disease(s) is/are poultry disease(s)?
    1 Aspergillosis
    2 Ranikhet disease
    3 Gill rot
    4 Black rot
    (a) Both (1) and (2)
    (b) Both (3) and (4)
    (c) Only (3)
    (d) Only (4)

(a) Both (1) and (2)

  1. Choose the correct statement(s)
    1 IARI has released a mustard variety rich in vitamin C.
    2 Pusa Sawani variety of Okra is resistant to aphids.
    3 Hairiness of leaves provides resistance to insect pests.
    4 Agriculture accounts for approximately 33% of India’s GDP and employs nearly 62% of the population.
    (a) (1) and (2)
    (b) (2) and (3)
    (c) (1), (3) and (4)
    (d) None of these

(c) (1), (3) and (4)

  1. Which of the following insects are useful to us?
    (a) Musca
    (b) Bombyx
    (c) Pheretima
    (d) Periplaneta

(b) Bombyx

  1. Birds like chicken that are grown for meat only are known as?
    (a) Hybrid
    (b) Broiler
    (c) Bird management
    (d) Bird culture

(b) Broiler

  1. Which of the following is a poultry disease?
    (a) Abdominal gland
    (b) Salivary gland
    (c) Anthrax
    (d) Ranikhet

(d) Ranikhet

  1. What food can prevent the kind of blindness associated with vitamin ‘A’ deficiency?
    (a) ‘Flavr Savr’ tomato
    (b) Canolla
    (c) Golden rice
    (d) Bt-Brinjal

(c) Golden rice

  1. What does one need to isolate protoplast?
    (a) pectinase
    (b) cellulase
    (c) both pectinase and cellulase
    (d) chitinase

(c) both pectinase and cellulase

  1. Which of the following fish is a marine fish?
    (a) Rohu
    (b) Hilsa
    (c) Catla
    (d) Common carp

(b) Hilsa

  1. What apiculture product is used in cosmetics and polishes?
    (a) Honey
    (b) Oil
    (c) Wax
    (d) Royal jelly

(c) Wax

  1. Where does more than 70% of the livestock population reside?
    (a) Denmark
    (b) India
    (c) China
    (d) India and China

(d) India and China

  1. How much of the population does the agriculture sector of India employ?
    (a) 50% of the population
    (b) 70% of the population
    (c) 30% of the population
    (d) 60% of the population

(d) 60% of the population

  1. Where does 33% of India’s Gross Domestic Product come from?
    (a) Industry
    (b) Agriculture
    (c) Export
    (d) Small-scale cottage industries

(b) Agriculture

  1. When certain chemicals and radiation are used to alter the base sequences of genes in crop plants, what is that called?
    (a) recombinant DNA technology
    (b) transgenic mechanism
    (c) mutation breeding
    (d) gene therapy

(c) mutation breeding

  1. When crop plants are enriched with certain desirable nutrients, what is the scientific process called?
    (a) crop protection
    (b) breeding
    (c) biofortification
    (d) bioremediation

(c) biofortification

  1. ‘Totipotency’ refers to the capacity of a?
    (a) cell to generate the whole plant
    (b) bud to generate the whole plant
    (c) seed to generate
    (d) cell to enlarge in size

(a) cell to generate the whole plant

  1. Which of the following plant diseases cannot be controlled chemically?
    (a) Viral disease
    (b) Diseases caused by remolder
    (c) Fungal diseases
    (d) Both (a) and (b)

(a) Viral disease

  1. How is genetic engineering possible?
    (a) the phenomenon of transduction in bacteria is well understood.
    (b) we can see DNA by electron microscope.
    (c) we can cut DNA at specific sites by endonucleases like DNAase-I.
    (d) restriction endonucleases purified from bacteria can be used in vitro.

(d) restriction endonucleases purified from bacteria can be used in vitro.

  1. What is the purpose of agitating suspension cultures?
    (a) Aeration of culture
    (b) Constant mixing of the medium
    (c) Breakage of cell aggregates into smaller cell groups
    (d) All of the above

(d) All of the above

  1. How was the sharbati sonora variety of wheat obtained?
    (a) X-ray treatment
    (b) crossing with wild varieties of wheat
    (c) hybridization between wild grasses
    (d) irradiation of Sonora 64 with gamma rays

(d) irradiation of Sonora 64 with gamma rays

  1. Where is the gene bank of wheat located in India?
    (a) IARI, New Delhi
    (b) Karnal
    (c) Ludhiana
    (d) Kanpur

(b) Karnal

  1. Who conducts the quarantine inspection of agricultural and horticultural crops?
    (a) National Bureau of Plant Genetic Resources, New Delhi
    (b) Botanical Survey of India, Calcutta
    (c) Forest Research Institute, Dehradun
    (d) All of the above

(a) National Bureau of Plant Genetic Resources, New Delhi

  1. How are introductions used?
    (a) a direct variety
    (b) a variety after selection
    (c) a parent of hybrid
    (d) All of these

(d) All of these

  1. Where is clonal selection used in crop plants?
    (a) Non-flowering species
    (b) Low seed setting species
    (c) Apomictic species
    (d) All of the above

(d) All of the above

  1. Listed below are some statements about somatic hybridisation. Choose the correct statements.
    I. Protoplasts of different cells of the same plant are fused.
    II. Protoplasts from cells of different species can be fused.
    III. Treatment of cells with cellulase and pectinase is mandatory.
    IV. The hybrid protoplast contains characters of only one parental protoplast.
    (a) I and II
    (b) I and III
    (c) I and IV
    (d) IV and III

(d) IV and III

  1. What is an explant?
    (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

(c) part of the plant used in tissue culture

  1. What is the biggest constraint of plant breeding?
    (a) availability of desirable genes in the crop and its wild relatives
    (b) infrastructure
    (c) trained manpower
    (d) transfer of genes from unrelated sources

(a) availability of desirable genes in the crop and its wild relatives

  1. What are lysines and tryptophans?
    (a) proteins
    (b) non-essential amino acids
    (c) essential amino acids
    (d) aromatic amino acids

(c) essential amino acids

  1. What is Micropropagation?
    (a) propagation of microbes in vitro
    (b) propagation of plants in vitro
    (c) propagation of cells in vitro
    (d) growing plants on a smaller scale

(b) propagation of plants in vitro

  1. What is a protoplast?
    (a) another name for protoplasm
    (b) an animal cell
    (c) a plant cell without a cell wall
    (d) a plant cell

(c) a plant cell without a cell wall

  1. How likely is it that a properly cooked(above 100° C) chicken or egg will cause bird flu?
    (a) very high
    (b) high
    (c) moderate
    (d) None of these

(d) None of these

  1. In a sugarcane crop, which combination would a farmer look for?
    (a) Thick stem, long internodes, high sugar content and disease resistant
    (b) Thick stem, high sugar content and profuse flowering
    (c) Thick stem, short internodes, high sugar content, disease-resistant
    (d) Thick stem, low sugar content and disease resistant

(a) Thick stem, long internodes, high sugar content and disease resistant

  1. Chemicals like fungicides and antibiotics are the ones 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

(b) kill pathogenic fungi and bacteria, respectively


Goodluck Medicoholics! Until next time.

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