Wired Faculty
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'Himgiri' developed by hybridization and selection for disease resistance against rust pathogens is a variety of
Maize
sugarcane
wheat
chilli
C.
wheat
Himgiri is a wheat variety resistant to leaf and stripes rust, hill bunt, etc.
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'Jaya' and 'Ratna' developed for green revolution in India are the varieties of
rice
wheat
maize
A.
rice
'Jaya' and 'Ratna' are better-yielding semi-dwarf varieties of rice developed in India.
A system of rotating crops with legume or grass pasture to improve soil structure and fertility is called
contour farming
strip farming
shifting agriculture
ley farming
D.
ley farming
A technique of micropropagation is
somatic hybridization
somatic embryogenesis
protoplast fusion
embryo rescue
B.
somatic embryogenesis
Somatic embryogenesis is technique of micropropagation. Micropropagation is the growing of plants from meristematic tissue or somatic cells of plants on suitable nutrient media under controlled conditions. The technique used to generate new plantlets by micropropagation.
(i) Organogenesis is method of micropropagation that involves tissue regernation of adventitions organs or axillary buds from explants.
(ii) Somatic embroygenesis is development of embryos without formation of zygote (i.e. development from somatic cells)
An organism used as a biofertilizer for raising soybean crop is
Azospirillum
Rhizobium
Nostoc
Azotobacter
B.
Rhizobium
Rhizobium leguminosarum is a symbiotic bacteria found in root nodules of legume. This bacterium has nitrogen fix nif gene and fixing N2, Soybean is a legume. Thus, Rhizobium is used as a biofertilizer for raising soybean crop.
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Mock Test Series
