CBSE Questions for Class 12 Medical Biology Strategies For Enhancement In Food Production Quiz 6 - MCQExams.com

Single cell protein production is more advantageous than traditional method of protein production because
  • Microorganisms usually have a much higher protein content of 30-70%.
  • Microorganisms can utilize a broad spectrum of raw materials as carbon sources including alkanes, methanol, methane, ethanol and sugars.
  • Microorganisms have a much higher growth rate.
  • All of the above.

Pekilo, a fungal rich protein product is used a
  • Animal feed
  • Plant feed
  • Human nutrient supplement
  • All of the above
Which of the following is an exotic breed of poultry?
  • Peela
  • Leghorn
  • Kajal
  • Nurie
A colony of honey bees Affected by CCD (note the small number of adult workers relative to a large amount of unhatched brood that forms the waxy cells in the hive frame. Frames 1 and 3 are most greatly affected.
In 2007, a significant proportion of American beekeepers complained of unusually large losses of bee populations from their overwintering levels in lateLoss of some colonies (approximately 10%) in early spring is normal and occurs every year. The problem was also reported by beekeepers in Europe, and researchers do not understand the specific causes of these losses.
At present, the syndrome is mysterious given that the main symptom is simply a low number of adult bees in the hive. There are no dead bodies and despite the fact that the affected colonies do co-exist with many disease organisms, no external signs of disease, pests or parasites seem to exist.
Going forward, which of the following observations and associated questions might not reasonably lead to testable scientific investigations into CCDs root cause(s)?
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  • Beekeepers in 22 states, including Hawaii, reported larger than average population declines. Were the losses in 2007 within normal range?
  • The parasitic mite, Varroa destructor, infests brood (larvae) cells and lives on and is carried by adult bees. If heavy mite infections are visible to professional beekeepers, could a link be made between CCD and Varroa parasitism?
  • A certain protozoan, Nosema apis, infests the guts of adult bees and, when present in high numbers, causes dysentery (associated with diarrhea and fluid loss). If colonies, yet to experience CCD, feature Nosema infestation and are treated to eradicate the parasite, will this prevent CCD?
  • It has been noted that a variety of viruses affect adult bees. Under conditions of stress viral populations can increase and cause CCD symptoms (e.g. paralysis, trembling and an inability to fly) in adult bees. Typically, stressful triggers include poor nutrition, bad weather or parasitism. If a virus is present with a larger number of stressors (i.e. poor nutrition and hosting two parasites), will the symptoms of CCD be greater than infection by virus alone?
A liger is the offspring of a male lion and female tiger. Ligers are not found in the wild. Male ligers are sterile, and females have low fertility. This is evidence that
  • A liger population may one day exist in the wild.
  • Hybrids can be produced from any two species of the same genus.
  • Lions and tigers are closely related different species.
  • Lions and tigers are one species.
Given below are the characteristics of an organism 'X'.
(i) Builds the hives.
(ii) Collects nectar and pollen.
(iii) Cleans the cells and protects the hive.
Which of the following is 'X'?
  • Queen Bee
  • Worker Bee
  • Drone
  • Male Bee
Which of the following is an important objective of biotechnology in the field of agriculture?
  • To produce disease resistant varieties of plants
  • To increase the nitrogen content
  • To decrease the seed number
  • To increase the plant weight
Biofortification mainly involves _________.
  • Increase in height
  • Increase in flowering
  • Increase in nutritional value of plant
  • All of the above
Hidden hunger can be cured by
  • Biomagnification
  • Biofortification
  • Bioremediation
  • Biosensors
Hisardale is obtained by crossing
  • Marino ewes with Bikaneri Rams
  • Bikaneri ewes with Marino Rams
  • Horse with Donkey
  • Superior Bull with Superior Cow
Golden rice which is an example of biofortification was used to introduce which of the following vitamins?
  • Vitamin D
  • Vitamin A
  • Vitamin C
  • Vitamin E
The best way to improve nutritional deficiency in rural areas is 
  • Biofortification of staple crops
  • Biofortification of ornamental plants
  • Biofortification of vegetative plant
  • None of the above
A donkey and a horse are able to mate and produce an offspring known as a mule. The resultant mule possesses 63 chromosomes in its cells due to the donkey parent having 62 chromosomes and the horse parent havingThe mule is unable to mate with other mules to produce its own offspring.
 Which of the following reproductive isolating mechanisms is operating in this situation?
  • Hybrid inviability
  • Hybrid mortality
  • Behavioral isolation
  • Hybrid sterility
  • Temporal isolation
Parbhani kranti, a variety of bhindi (lady's finger), is resistant to ____.
  • Bacterial blight
  • Yellow mosaic virus
  • Black rot
  • Leaf curl
Breeding results in ?
  • Genetic variation
  • Increase in population
  • Mutation
  • None of the above
The process of developing new variety by changing the genome through X-ray or UV radiation is known as _____.
  • Protoplast fusion
  • Mutational breeding
  • Tissue culture
  • Both a and b
Protein energy malnutrition can be treated by 
  • Biomagnification
  • Biofortification
  • Bioremediation
  • None of the above
A child having kwashiorkor is suggested to have 
  • Organic food
  • Biofortified crops
  • GMO crops
  • Disease resistant crops
Biofortification mainly involves
  • Selective breeding
  • Electroporation
  • Microinjection
  • All of the above
Which of the following is a major advantage of biofortification?
  • It is applicable for staple crops.
  • It aims to improve nutritional quality of food.
  • It produces higher yield in environmental friendly manner.
  • All of the above.
Golden rice includes the expression of which of the following enzymes?
  • Beta-carotene
  • Zymase
  • Lactase
  • All of the above
Which of the following can be classified under biofortification?
  • Introduction of Bt-gene
  • Introduction of nif gene
  • Production of golden rice
  • All of the above
A massive population undergoing the nutritional deficiency can be treated by 
  • Biofortification
  • Biomagnification
  • Bioremediation
  • None of the above
Which of the following technique can fill the deficiency of micronutrients?
  • Biological nitrogen fixation
  • Biofortification
  • Bioremediation
  • None of the above
New green revolution for nutritional value is applicable to which of the following technique ?
  • Biosensor
  • Biofortification
  • Biomagnification
  • None of the above
Maize hybrids developed by biofortification technique was mainly done to improve which of the following micronutrients?
  • Fat
  • Amino acid
  • Carbohydrate
  • Vitamin
Which of the colour can be seen on the rice which has undergone biofortification?
  • Golden
  • Silver
  • White
  • None of the above
Which of the following plant produces beta-carotene naturally?
  • Rice
  • Tobacco
  • Potato
  • None of the above
Bread fortified with folate can help in 
  • Bone development
  • Neurological development
  • Fetal development
  • Both B and C
Which of the following agronomic trait can be fortified in beans?
  • Virus resistance
  • Heat tolerance
  • Drought tolerance
  • All of the above
Biofortification is an example of application of
  • Bioinformatics
  • Biotechnology
  • Sustainable development
  • Organic farming
Single cell protein refers to
  • A specific polypeptide extracted from pure culture of single type of cells
  • Sources of mixed proteins extracted from pure or mixed culture of organisms or cells
  • Proteins extracted from a single cell
  • A specific protein extracted from a single cell
Isinglass is prepared from
  • Ichthyophis
  • Lungs
  • Fishes
  • Lizards
Zinc, iron and vitamin A deficiency can be sorted out by 
  • Biofortification
  • Bioremediation
  • Biofertilizers
  • Bioaugmentation
Pearl millet has high percentage of
  • Zinc and Iron
  • Zinc and Calcium
  • Phosphorous and Sulphur
  • All of the above
Which of the following is the most infective type of bird flu? 
  • H5N1
  • H7N9
  • H1N1
  • None of the above
In which of the following types of breeding the superior males of one breed are mated with superior females of another breed?
  • Out crossing
  • Cross breeding
  • Out breeding
  • In breeding
Bird flu is also known as
  • Avian influenza.
  • Hepatitis A.
  • Hepatitis B.
  • Yellow fever.
Dead and dried cell mass of microbes having nutritive value is also known as
  • BGA (blue-green algae)
  • SCP (single cell protein)
  • STP (sewage treatment plant)
  • VAM (vesicular arbuscular mycorrhizae)
Which of the following are the symptoms of bird flu?
  • Malaise
  • Muscle aches
  • Respiratory disorder
  • All of the above
HPAI stands for
  • Highly pathogenic avian infection
  • Highly pathogenic avian influenza
  • Highly pure avian influenza
  • None of the above
The litter bed of poultry housing has the thickness of
  • 5 to 7.5 cm
  • 4 to 6.5 cm
  • 3.5 to 5 cm
  • 4.5 to 5 cm
Large ponds in which the fingerlings are fed with artificial feed.
  • Breeding ponds
  • Nursing ponds
  • Hatchery ponds
  • Stocking ponds
The inherent potential of any living plant cell to develop into entire organism is called as
  • Differentiation
  • Organogenesis
  • Morphogenesis
  • Totipotency
In Brassica (mustard) .......... variety is resistant to Aphids.
  • Pusa $$A - 4$$
  • Pusa Gaurav
  • Pusa Sawni
  • Pusa Shubra
The technique of producing large number of genetically similar plants within short time by tissue culture is called as _____________.
  • Organogenesis
  • Somatic hybridization
  • Micro-propagation
  • Protoplast culture
Homozygous purelines in cattle can be obtained by
  • Mating of individuals of different species
  • Mating of related individuals of same breed
  • Mating of unrelated individuals of same breed
  • Mating of individuals of different breed
Rearing of bees is
  • Sericulture
  • Apiculture
  • Silviculture
  • Horticulture
Which of the following is an algal source of SCP?
  • Candida
  • Methanobacillus
  • Chlorella
  • Saccharomyces
Select the correct match.

Column-AColumn-B
(a) Rock bee(i) Apis indica
(b) Little bee(ii) Apis dorsata
(c) European bee(iii) Apis florea
(d) Indian bee(iv) Apis mellifera
  • a- iv, b-i, c-iii, d-ii
  • a-iii, b-ii, c-iv, d-i
  • a-ii, b-iii, c-iv, d-i
  • a-iv, b-iii, c-i, d-ii
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