Which one of the following shows maximum genetic diversity in India?Â
RiceÂ
Maize
Mango
Mango
Nitrifying bacteria
convert free nitrogen to nitrogen compounds
convert proteins into ammonia
reduce nitrates to free nitrogenÂ
reduce nitrates to free nitrogenÂ
Secondary sewage treatment is mainly aÂ
mechanical process
chemical process
biological process
biological process
Which one of the following is not a biofertilizer
Rhizobium
Nostoc
Mycorrhiza
Mycorrhiza
Mass of living matter at a trophic level in an area at any time is called.Â
Detritus
Humus
Standing state
Standing state
What will you look for to identify the sex of the following?
male frog - a copulatory pad on the first digit of the hind limb
Female cock - anal cerci
Male shark - claspers borne on pelvic fins
Male shark - claspers borne on pelvic fins
A collection of plants and seeds having diverse alleles of all the genes of a crop is called
germplasm
gene library
genome
genome
The most common substrate used in distilleries for the production of ethanol isÂ
soya mealÂ
ground gram
molasses
molasses
Of the total incident solar radiation, the proportion of PAR isÂ
about 60%
less than 50%
more than 80%
more than 80%
B.
less than 50%
PAR ( photosynthetically active radiation) designates the spectral range of solar radiation from 400 to 700 nm that photosynthetic organisms are able to use in the process of photosynthesis. Of the total incident solar radiation, the proportion of PAR is less than 50%.
Ethanol is commercially produced through a particular species ofÂ
Clostridium
Trichoderma
Aspergillus
Aspergillus