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

Even in absence of pollinating agents seed-setting is assured in 

• Commellina

• Zostera

• Salvia

• Salvia

Removal of introns and joining of exons in a defined order during transcription in called

• looping

• inducing

• slicing

• slicing

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

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.

Yeast is used in the production of

• citric acid and lactic acid

• lipase and pectinase

• bread and beer

• bread and beer

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

The upright pyramid of number is absent in

• pond

• forest

• lake

• lake

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