18642.Study the followings related to uses of plants and identify the correct match for the sorghum and cotton respectively.
I. Blood purification and organic fertilizer.
II. Animal feed and paper industry
III. B Vitamin and cosmetics.
IV. Explosives and organic fertilizer.
The correct pair is:
I, II
II, III
III, IV
II, IV
18643.Agriculture by using only biofertilizers is called
Manuring
Composting
Inorganic farming
Organic farming
18644.Bacterial leaf blight of rice is caused by a species of:
Envinia
Xanthomonas
Pseudomonas
Alternaria
18646.A symbiotic relationship/interaction in which one species benefits and the other species is not affected is called:
Ectomycorrhizae
Endomycorrhizae
Commensalism
Helotism
18647.Which one of the following is not used in organic farming?
Snail
Glomus
Earthworm
Oscillatoria
18648.Organism like Escherichia coli and Chlamydia trachomatis fall into which domain?
Eukarya
Archaea
Bacteria
Animalia
18649.Organisms called Methanogens are most abundant in a
Hot spring
Sulphur rock
Cattle yard
Polluted stream
18650.Secondary sewage treatment is mainly a
Biological process
Physical process
Mechanical process
Chemical process
18651.Ethanol is commercially produced through a particular species of
Aspergillus
Saccharomyces
Clostridium
Trichoderma
18652.A sewage treatment process in which a part of decomposer bacteria present in the wastes is recycled into the starting of the process is called
Primary treatment
Activated sludge treatment
Cyclic treatment
Tertiary treatment
18653.Which one of the following plant is commonly used as green manure?
Cassia fistula
Acacia nilotica
Dalbergia sissoo
Crotalaria juncea
18656.Semiconservative replication of DNA was first demonstrated in
Salmonella typhimurium
Drosophila melanogaster
Escherichia coli
Streptococcus pneumoniae
18657.Some hyperthermophilic organisms that grow in highly acidic (pH2) habitats belong to the two groups
Liverworts and yeasts
Eubacteria and archaea
Cyanobacteria and diatoms
Protists and mosses
18658.Morphine, which is used as an analgesic is obtained from
Taxus brevifolia
Papaver somniferum
Cinchona officinalis
Berberis nilghiriensis
18660.The symbiotic association of fungi with the roots of higher plants is called:
Eubacteria
Actinomycetes
Mycorrhiza
None of these