Bull semen is stored in
liquid carbon dioxide
liquid oxygen
liquid nitrogen
ice
C.
liquid nitrogen
Semen is stored in semen banks for artificial insemination or artificial breeding, eg, Bull's semen is stored at -196oC temperature. This temeperature is obtained by liquid nitrogen.
Deep freezing is used for keeping seven day old embryos for several years. Deep freezing is also done at -196oC.
The name of Norman Borlaug is associated with
green revolution
yellow revolution
white revolution
blue revolution
Covered smut of barley is caused by
Ustilago hordei
Tilletia caries
Ustilago nudo
Colletotrichum falcatum
The world's highly prized wool yielding 'Pashmina' breed is
sheep
goat
goat- sheep cross
Kashmir sheep- Afghan sheep cross
Which is correctly matched?
Apiculture - Honey bee
Pisciculture - Silk moth
Sericulture - Fish
Aquaculture - Mosquito
In rabbit, head of epididymis present at the head of testis is called
vas deferens
cauda epididymis
gubernaculum
caput epididymis
Three crops that contribute maximum to global food grain production are
wheat, rice and maize
wheat, maize and sorghum
rice, maize and sorghum
wheat, rice and barley
Which of the following is generally used for induced mutagenesis in crop plants?
Alpha particles
X- rays
UV (260 nm)
Gamma rays (from cobalt 60)
