Which one of the following is an example of carrying out biological control of pests/diseases using microbes?
Trichoderma sp. against certain plant pathgens
Nucleopolyhedrovirus against white rust in Brassica
Bt-cotton to increase cotton yield
Bt-cotton to increase cotton yield
C.
Bt-cotton to increase cotton yield
Bt cotton is Genetically Modified (GM) cotton which has an incorporated gene extracted from the bacterium Bacillus thuringiensis. This gene codes for Bt toxin in plant tissues which is harmful only to a small fraction of insects, most notably the larvae of lepidopterans, moths, butterflies, beetles, flies, etc and harmless to other forms of life. So, it is used as biological control of pests/diseases.
Which one single organisms or the pair of organisms is correctly assigned to its or their named taxonomic group?
Paramecium and Plasmodium belong to the same kingdom as that of Penicillium.
Lichen is a composite organism formed from the symbiotic association of an algae and a protozoan.
Yeast used in making bread and beer is a fungus.
Yeast used in making bread and beer is a fungus.
Even in absence of pollinating agents seed-setting is assured in
Commellina
Zostera
Salvia
Salvia
Yeast is used in the production of
citric acid and lactic acid
lipase and pectinase
bread and beer
bread and beer
Removal of introns and joining of exons in a defined order during transcription in called
looping
inducing
slicing
slicing
F2 generation in a Mendelian cross showed that both genotypic and phenotypic ratios are same as 1:2:1. It represents a case of
codominance
dihybrid cross
monohybrid cross with complete dominance
monohybrid cross with complete dominance
For transformation, microparticles coated with DNA to be bombarded with gene gun are made up of
silver or platinum
platinum or zinc
silicon or platinum
silicon or platinum
A nitrogen-fixing microbe associated with Azolla in rice field is
Spirulina
Anabaena
Frankia
Frankia
The coconut water and the edible part of coconut are equivalent to
endosperm
endocarp
mesocarp
mesocarp