CBSE Questions for Class 12 Medical Biology Strategies For Enhancement In Food Production Quiz 8 - MCQExams.com

What do we mean by single cell protein?
  • One protein synthesised by muscle cell
  • Protein synthesised by micro-organisms
  • Protein synthesised by skin cell
  • One protein synthesised by liver cell
Tissue culture technique was first attempted by
  • Haberlandt
  • Hanning
  • Nobecourt
  • Gautheret
Pollen tablets available is market are for
  • Breeding programme
  • Supplementary food
  • Ex situ conservation
  • In vitro fertilization
Who developed the technique of nurse tissue to show cellular totipotency
  • Hilderbrandt
  • Steward
  • Muir
  • Konar
Callus is
  • Tissue that forms embryo
  • An insoluble carbohydrate
  • Tissue that grows to form embryoid
  • Unorganised actively dividing mass of cells maintained in culture
Plant medium used widely in preparation of culture medium is got from
  • Cycas revoluta
  • Cocos nucifera
  • Pinus roxburghii
  • Borassus flabellifera
F.C. Steward is associated with
  • Molecular biology
  • Genetics
  • Tissue culture
  • Immunology
The structure employed by White for first successful tissue culture was
  • Leaf cells
  • Root of Carrot
  • Root of Tomato
  • Apical meristem
Through which technique more female plants can be produced in Papaya ___________.
  • Genetic engineering
  • Polyploid breeding
  • Spraying ethephon
  • Tissue culture
Embryoids formed in tissue culture from pollen grain are due to
  • Test tube culture
  • Cellular totipotency
  • Organogenesis
  • Double fertilisation
Explant is
  • A small part of plant for tissue culture
  • Exploited part of plant
  • Harvested plant
  • Uprooted part for transplantation
Cross fertilization tests have led to unify different species of North American _____________.
  • Sparrows
  • Crows
  • Pigeons
  • Eagles
Hinny is 
  • Fertile hybrid between stallion and female donkey
  • Sterile hybrid between stallion and female donkey
  • Fertile hybrid between mare and male donkey
  • Fertile hybrid between stallion and male donkey
Hybrid breakdown is failure of _________.
  • Hybrid zygote to develop into offspring.
  • Hybrid adult to produce fertile offspring.
  • Fusion failure of ova and sperms of two species.
  • All of the above.
A true breeding plant is
  • Always homozygous recessive in its genetic constitution
  • One that is able to breed on its own
  • Produced due to cross pollination among unrelated plants
  • Near homozygous and produces offspring of its kind
What is true in case of Honey Bee?
  • Male diploid, female haploid
  • Male diploid, female diploid
  • Male haploid, female haploid
  • Male haploid, female diploid
Hybrid sterility is found in ____________.
  • Horse
  • Hinny
  • Lion
  • Crocodile
  • Earthworm
Which one shows arrhenotoky in development?
  • Pumea
  • Drosophila
  • Apis
  • Bonellia
An animal where male carries half the chromosomes present in female is?
  • Amoeba
  • Gorilla
  • Honey Bee
  • Geometrid Moth
The process of mating between closely related individuals is
  • Self breeding
  • Inbreeding
  • Hybridisation
  • Heterosis.
Mule is a offspiring of
  • Cross breeding
  • Interspecific hybridisation
  • Intraspecilic hybridisation
  • None of the above
Male produce sperms by mitosis in _______________.
  • Periplaneta americana
  • Apis mellifera
  • Drosophila melanogaster
  • Lepisma
First unbeaking in chicken is done on :
  • 6th day
  • 15th day
  • 21st day
  • 28th day
Sex determination of chicken is done when they are _____________.
  • One day old
  • Three day old
  • One week old
  • Ten day old
Birds reared for eggs only are ________.
  • Females only
  • Females with a few males
  • Females and males in equal ratio
  • Females and males in ratio of 1:2
Eggs of chicken are incubated at _____________.
  • $$ 10^o C $$
  • $$ 24^o C $$
  • $$ 37^o C $$
  • $$ 45^o C $$
Trimming of combs and wattles of young poultry birds is called _____________.
  • Culling
  • Dubbing
  • Brooding
  • Pullet
Male Honey Bee is?
  • Deficient in one chromosome
  • Haploid
  • Parthenote
  • Both B and C
Pullet is the term used for _______.
  • Cock less than one year old
  • Cock more than one year old
  • Hen less than one year old
  • Hen more than one year old
Breeding in Fowl is done between :
  • Six month old hen and cock.
  • One year old hen and two year old cock.
  • Two year old hen and one year old cock.
  • Two year old hen and cock.
Second debeaking of chicken is carried out when they are ___________.
  • 4 week old
  • 6 week old
  • 8 week old
  • 18 week old
A fresh water fish is :
  • Wallago
  • Sardinella
  • Lates
  • All the above
Evaluation of newly evolved varieties is carried out by
  • All agricultural universities
  • ICAR
  • IARI
  • National Bureau of Plant Genetic Resources.
Breeding for disease resistance requires
  • A good source of resistance
  • Planned hybridisation
  • Disease test
  • All the above.
Layers continue to lay eggs upto period of ___________.
  • 12-15 months
  • 18-20 months
  • 24-26 months
  • 26-30 months
Floor of poultry should be slanting for :
  • Proper collection of eggs.
  • Removal of eggs
  • Retention of water
  • Removal of litter
Broilers become ready for dressing after ____________.
  • 3-4 weeks
  • 6-7 weeks
  • 12-14 weeks
  • 16-20 weeks
Fishing over coast in :
  • Estuarine fishery
  • Coastal fishery
  • Offshore fishery
  • Inshore fishery
Heterosis cannot be maintained in sexually reproducing plants as it disappears on
  • Outbreeding
  • Inbreeding
  • Cross breeding
  • None of the above.
The structure employed by White for first successful tissue culture was ____________.
  • Root of Carrot
  • Root of Tomato
  • Leaf cells
  • Apical meristem.
A totipotent cell means ________________.
  • An undifferentiated cell capable of developing into a system or entire plant
  • An undifferentiated cell capable of developing into an organ
  • An undifferentiated cell capable of developing into complete embryo
  • Cell which lacks the capability to differentiate into an organ or system.
Majority of improved Indian Rice varieties have arisen from a cross between
  • Oryza sativa indica $$\times$$ Oryza nivara
  • Oryza sativa indica $$\times$$ O. sativa japonica
  • O. sativa japonica $$\times$$ O. nivara
  • O. rufipogon $$\times$$ O. nivara.
Aim of plant breeding is to
  • Control pollution
  • Keep soil fertile
  • Produce improved varieties
  • To maintain wild plants
Which of the following is not used for crop improvement?
  • Inbreeding
  • Introduction
  • Hybridisation
  • Mutations.
A cybrid is hybrid carrying
  • Genomes and cytoplams of two different plants
  • Cytoplasms of two different plants
  • Cytoplasms of two different plants but genome of one plant
  • Genomes of two different plants
  • Cytoplasms of several plants but genomes of two plants.
Which of the following is source of single cell protein?
  • Bacillus thuringiensis
  • Azospirillum
  • Saccharomyces cerevisiae
  • Methylophilus methylotrophus
Fish meal is :
  • Meal for fish
  • Food fish
  • Waste fish
  • None of the above
Cross between two species of the same genus is
  • Intraspecific hybridisation
  • Intervarietal hybridisation
  • Interspecific hybridisation
  • Intergeneric hybridisation
Callus is _____________.
  • Tissue that forms embryo
  • An insoluble carbohydrate
  • Tissue that grows to from embryoid
  • Unorganised actively dividing mass of cells maintained in culture
One of the alternate sources of proteins for animal and human nutrition is?
  • Single cell protein
  • Nonvegetarian meal
  • Mushrooms
  • Pulses
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