Parthenocarpic tomato fruits can be produced by
treating the plants with low concentrations of gibberellic acid and auxins
raising the plants from vernalized seeds
treating the plants with phenyl mercuric acetate
removing androecium of flowers before pollen grains are released
Golden rice is a promising transgenic crop. When released for cultivation. It will help in
producing a petrol –like fuel from rice
alleviation of vitamin A deficiency
In Maize, hybrid vigour is exploited by
bombarding the protoplast with DNA
harvesting seeds from the most productive plants
crossing of two inbred parental lines
Which one of the following is the most suitable medium for culture of Drosophila melanogaster?
Curing of tea leaves is brought about by the activity of
Triticale , the first man –made cereal crop, has been obtained by crossing wheat with
Bacillus thuringiensis (Bt) strains have been used for designing novel:
Bio –mineralization processes
Bio –metallurgical techniques
The most likely reason for the development of resistance against pesticides in insects damaging a crop is
acquired heritable chages
India’s wheat revolution in the 1960s was possible primarily due to
quantitative trait mutations
mutations resulting in plant height reduction
increased chlorophyll content
Which of the following plants are used as green manure in crop fields and in sandy soils?
Saccharum munja and Lantana camara
Calotropis procera and phyllanthus niruri
Crotalaria juncea and Alhagi camelorum
Dichanthium annulatum and Azolla nilotica
Which of the following crops have been brought to India from New World?
Tea, rubber, mango
Cashewnut, potato, rubber
Which of the following is pair of bio –fertilizers?
Salmonella and E. coli
Rhizobium and grasses
Nostoc and legumes
Azolla and BGA
Before European invader which vegetable was absent in India?
Maize and Chichinda
Simla mirch and Brinjal
Potato and tomato
He aquatic fern, which is an excellent biofertiliser is
Hybridoma cells are
Product of spore formation in bacteria
Only cells having oncogenes
Hybrid cells resulting from myeloma cells
Nervous cells of frog .
Which one of the following insecticides is more stable in the environment?
What is Agent Orange?
A hazardous chemical used in luminous paints
A biodegradable insecticide
A weedicide containing dioxin
Colour used in fluorescent lamps