18588.What should be added to increase efficiency of biofertilizer?
Calcium
Potassium
Phosphorus
Zinc
18589.Which is correct about nitrogen fixation by legumes? They Fix nitrogen through
Specialised bacteria in their roots
Specialised bacteria in their leaves
Independent of bacteria that live in their roots
The statement is wrong
18591.The highly degraded organic matter rich in phosphorus, nitrogen and potassium in particular, resulting from the activity of earthworms is called
Compost bedding
Humus
Worm casting
Vermicompost
18592.Which is correct?
Legumes fix nitrogen through bacteria in their leaves
Legumes fix nitrogen through bacteria in their roots
Legumes fix nitrogen independent of bacteria
Legumes do not fix nitrogen
18593.Which of the following can use molecular nitrogen as nutrient?
Methanomonas
Mucor
Rhizobium
Spirogyra
18594.Which one is a biofertilizer?
NPK mixture
Rhizobia in legume roots
Rhizobia in farmyard manure
Green manure
18597.Azotobacter and bacillus polymyxa are
Decomposers
Nonsymbiotic nitrogen fixers
Symbiotic nitrogen fixers
pathogenic bacteria
18600.Which one of the following is used for external application in the cure of leprosy?
Rice bran oil
Neem seed oil
Cotton seed oil
Groundnut seed oi
18601.Some blue-green algae can be used as biofertilizers as they are
Photosynthetic
Surrounded by mucilage
Growing everywhere
Capable of fixing nitrogen
18603.Cultivation of fishes in artificially prepared ponds or water bodies is called
Aquaculture
Pisciculture
Vermiculture
Agriculture
18605.Earthworms which are seen on the surface are called
Epigeic (epigenic)
Endogeic (endogenic)
Annecic
Hygienic
18607.Fish introduced in India by foreigners is
Labeo rohita
Mystus singhala
Pomfret
Clarias batrachus
18608.Hypophysation is done in major carps
to increase size
to increase their growth
to increase breeding in fisheries
to increase their palatability
18609.Which one is the wrong pairing for the disease and its causal organism?
Root-knot of vegetables-Meloidogyne sp
Late blight of potato - Alternaria solani
Black rust of wheat - Puccinia graminis
Loose smut of wheat - Ustilago nuda
18610.The chemical used for providing protection to vermibed from ants is
Chloramphenicol
Griseofulvin
Chlorpyriophosphate
DDT
18611.Hybrid vigour is mostly due to
Homozygosity of pure characters
Superiority of all the genes
Heterozygosity
Mixing up of cytoplasm of the male with that of female
18612.The best way to obtain bacteria and viruses free plants through tissue culture
Shoot apex or meristem culture
Seed germination after gamma-irradiation
Micropropagation
Seed germination under aseptic conditions
18615.Antiseptic properties are found in the leaves of
Asparagus racemosus
Azadirachta indica
Aloe vera
Adhatoda zeylanica
18616.Three carp fishes, Catla Labeo and Cirrhina, can be grown together in the same pond more economically as they have
Positive interactions
Commensalism
Symbiosis
No competition for food
18617.Crustacean fishery is connected with exploitation of
Oysters and Crabs
Mussels and Squids
Shells and Cuttle fish
Lobster and Prawn
18618.Red pigment (leghaemoglobin) having affinity for oxygen is present in the roots of
Mustard
Soyabean
Carrot
Radish
18620.Which is purely a capture type of fishery
Marine fishery
Inland fishery
Culture fishery
Aquaculture
18621.A medicine for bronchitis is got from
Rauwolfia serperntina
Curcuma longa
Adhatoda vasica
Hemidesmus indicus
18623.If more than single species of fish is cultured at a time, then it is called
Monoculture
Aquaculture
Polyculture
Mori culture
18624.In India which of the following genera of earthworms is extensively used for vermiculture
Eudrigaster
Eudrilus
Pontoscolex
Pheretima
18625.Inand fisheries are
deep sea fishing
capturing fishes from sea coast
raising and capturing fishes in fresh water
oil extraction from fish
18626.Induced breeding technique is used in
Marine fishery
Capture fishery
Culture fishery
Inland fishery
18627.Isinglass is employed in
Preparation of wines
Clearing of wines
Distillation of wines
Preservation of wines
18630.Smooking is used as a technique of
Fish preservation
Mushroom cultivation
Crystalisation of sugar
Crop harvesting