CBSE Class 12 Biology Strategies for Enhancement in Food Production MCQs Set 03

Answer : C

Question :  Which plant will loss its economic value, if its fruits are produced by induced partheno- carpy ?
a) Grape                 
b)  Pomegranate
c) Orange               
d) Banana

Answer : B

Question :  The reason why vegetatively reproducing crop plants are best suited for maintaining hybrid vigour is that 
a) they can be easily propagated
b) they have a longer life span
c) they are more resistant to disease
d) once a desired hybrid is produced, there are no chances of losing it

Answer : D

Question :  The term aquaculture means 
a) aspergillosis
b) inland fisheries
c) marine fisheries
d) Both b) and c)

Answer : D

Question :  The new varieties of plants are produced by
a) selection and hybridization
b) selection and introduction
c) mutation and selection
d) introduction and mutation

Answer : A

Question :  One of the most important reason why wild plants should thrive is that these are good sources of 
a) unsaturated edible oils
b) highly nutritive animals feed
c) genes for resistance to diseases and pests
d) rare and highly sought after fruits of medical importance

Answer : C

Question :  Before the European invaders which veg- etable was/were absent in India ?
a) Potato and tomato 
b) Simla mirch and brinjal
c) Maize and chichinda
d) Bitter gourd

Answer : A

Question :  Which statement is correct about centre of origin of plants? 
a) More diversity in varieties
b) Frequency of dominant gene is more
c) Climatic conditions more favourable
d) None of the above

Answer : A

Question :  Which of the following crops have been brought to India from New world ?
a) Cashewnut, potato, rubber
b) Mango, tea
c) Tea, rubber, mango
d) Coffee

Answer : A

Question :  India’s wheat yield revolution in the 1960s was possible primarily due to
a) hybrid seeds
b) increased chlorophyll content
c) mutations resulting in plant height reduction
d) quantitative trait mutations

Answer : C

Question :  The name of Norman Borlaug is associated with
a) Green revolution
b) Yellow revolution
c) White revolution
d) Blue revolution

Answer : A

Question :  The world’s highly prized wool yielding ‘Pashmina’ breed is
a) sheep
b) goat
c) goat-sheep cross
d) Kashmiri sheep-Afghan sheep cross

Answer : B

Question :  Which of the following is generally used for induced mutagenesis in crop plants ?
a) Alpha particles
b) X-rays
c) UVrays (260 nm)
d) Gamma rays (from cobalt 60)

Answer : D

Question :  Crop plants grown in monoculture are 
a) low in yield
b) free from intraspecific competition
c) characterized by poor root system
d) highly prone to pests

Answer : D

Question :  Triticale, the first man-made cereal crop, has been obtained by crossing wheat with 
a) rye
b) pearl millet
c) sugarcane
d)  barley

Answer : A

Question :  Parthenocarpic tomato fruits can be pro- duced by 
a) removing androecium of flowers before pollen grains are released
b) treating the plants with low concentra- tions of gibberellic acid and auxins
c) raising the plants from vernalized seeds
d) treating the plants with phenyl mercuric acetate

Answer : B

Question :  Which one of the following pair of organ- isms are exotic species introduced in India ? 
a) Ficus religiosa, Lantana camara
b)  Lantana camara, Water hyacinth
c)  Water hyacinth, Prosopis cinereria
d) Nile perch, Ficus religiosa

Answer : C