//M1//QN137//MCQ//DL0//EQ
Which gases are produced in labelled part X in given figure ? 
Digester
X
(A) O2, CO, CO2, H2, CH4 (B) CO2, O2, H2 (C) CH4, H2, CO2, O2 (D) CO2, H2, CH4
//X
(D) CO2, H2, CH4
//M1//QN1//MCQ//DL0
The technology of biogas production from cow dung was developed in India largely due to the efforts of:
(A) Gas Authority of India (B) Oil and Natural Gas Commission (C) Indian Agricultural Research Institute and Khadi and Village Industries Commission (D) Indian Oil Corporation.
//X
//M1//QN2//MCQ//DL0
Big holes in Swiss cheese are made by a:
(A) a machine (B) a bacterium that produces methane gas (C) a bacterium producing a large amount of carbon dioxide (D) a fungus that releases a lot of gases during its metabolic activities.
//X
//M1//QN3//MCQ//DL0
The vitamin whose content increases following the conversion of milk into curd by lactic acid bacteria is:
(A) vitamin C (B) vitamin D (C) vitamin B12 (D) vitamin E.
//X
//M1//QN4//MCQ//DL0
Methanogens do not produce:
(A) Oxygen (B) Methane (C) Hydrogen sulphide (D) Carbon dioxide.
//X
//M1//QN5//MCQ//DL0
Waste water treatment generates a large quantity of sludge, which can be treated by:
(A) anaerobic digesters (B) flocs (C) chemicals (D) oxidation pond.
//X
//M1//QN6//MCQ//DL0
Methanogenic bacteria are not found in:
(A) rumen of cattle (B) gobar gas plant (C) bottom of water-logged paddy fields (D) activated sludge.
//X
//M1//QN7//MCQ//DL0
Match the following list of bacteria and their commercially important products:
|
Bacterium |
Product |
||
|
A |
Aspergillus niger |
i |
Lactic acid |
|
B |
Acetobacter aceti |
ii |
Butyric acid |
|
C |
Clostridium butyricum |
iii |
Acetic acid |
|
D |
Lactobacillus |
iv |
Citric acid |
(A) A – ii, B – iii, C – iv, D – i (B) A – ii, B – iv, C – iii, D – i (C) A – iv, B – iii, C – ii, D – i (D) A – iv, B – i, C – iii, D – ii
//X
//M1//QN8//MCQ//DL0
Match the items in Column ‘I’ and Column ‘II’ and choose correct answer.
|
Column I |
Column II |
||
|
A |
Lady bird |
i |
Methanobacterium |
|
B |
Mycorrhiza |
ii |
Trichoderma |
|
C |
Biological control |
iii |
Aphids |
|
D |
Biogas |
iv |
Glomus |
(A) A-ii, B-iv, C-iii, D-i (B) A-iii, B-iv, C-ii, D-i (C) A-iv, B-i, C-ii, D-iii (D) A-iii, B-ii, C-i, D-iv
//X
//M1//QN9//MCQ//DL0
Which one of the following alcoholic drinks is produced without distillation?
(A) Wine (B) Whisky (C) Rum (D) Brandy
//X
//M1//QN10//MCQ//DL0
Match the following list of bioactive substances and their roles:
|
Bioactive Substance |
Role |
||
|
A |
Statin |
i |
Removal of oil stains |
|
B |
Cyclosporin A |
ii |
Removal of clots from blood vessels |
|
C |
Streptokinase |
iii |
Lowering of blood cholesterol |
|
D |
Lipase |
iv |
Immuno-suppressive agent |
(A) A – ii, B – iii, C – i, D – iv (B) A – iv, B – ii, C – i, D – iii (C) A – iv, B – i, C – ii, D – iii (D) A – iii, B – iv, C – ii, D – i
//X
//M1//QN11//MCQ//DL0
The primary treatment of waste water involves the removal of:
(A) dissolved impurities (B) stable particles (C) toxic substances (D) harmful bacteria.
//X
//M1//QN12//MCQ//DL0
BOD of waste water is estimated by measuring the amount of:
(A) total organic matter (B) biodegradable organic matter (C) oxygen evolution (D) oxygen consumption
//X
//M1//QN13//MCQ//DL0
Mycorrhiza does not help the host plant in:
(A) Enhancing its phosphorus uptake capacity (B) Increasing its tolerance to drought (C) Enhancing its resistance to root pathogens (D) Increasing its resistance to insects.
//X
//M1//QN14//MCQ//DL0
Which one of the following is not a nitrogen-fixing organism?
(A) Anabaena (B) Nostoc (C) Azotobacter (D) Pseudomonas
//X
//M1//QN15//MCQ//DL0
The residue left after methane production from cattle dung is:
(A) burnt (B) buried in land fills (C) used as manure (D) used in civil construction
//X
//M1//QN16//MCQ//DL0
Activated sludge should have the ability to settle quickly so that it can:
(A) be rapidly pumped back from sedimentation tank to aeration tank (B) absorb pathogenic bacteria present in waste water while sinking to the bottom of the settling tank (C) be discarded and anaerobically digested (D) absorb colloidal organic matter.
//X
//M1//QN17//MCQ//DL0
Micro organisms such as Lactobacillus is commonly called
(A) Citric Acid Bacteria (CAB) (B) Lactic Acid Bacteria (LAB) (C) Tartaric Acid Bacteria (TAB) (D) Formic Acid Bacteria (FAB)
//X
//M1//QN18//MCQ//DL0
Which bacterium is responsible for large holes in 'Swiss cheese' are due to the production of a large amount of CO2 ?
(A) Propionibacterium (B) Aspergillus niger (C) LAB (D) Saccharomyces cerevisiae
//X
//M1//QN19//MCQ//DL0
Dough kept overnight in warm weather becomes soft and spongy because of
(A) Cohesion (B) Osmosis (C) Absorption of carbon dioxide from atmosphere (D) Fermentation
//X
//M1//QN20//MCQ//DL0
Which of the following process is performed by yeast cell ?
(A) Transpiration (B) Pasteurization (C) Fermentation (D) Effervescence
//X
//M1//QN21//MCQ//DL0
The bread is soft and porous when the yeast cells are mixed in the lump of wheat flour because :
(A) Yeast produce benzoic acid (B) Evolution of CO2 makes the bread spongy (C) Yeast is soft and flour also becomes soft (D) Yeast produces acetic acid and alcohol which give softness to the bread
//X
//M1//QN22//MCQ//DL0
Match the following organisms with the products they produce.
|
Column I |
ColumnII |
||
|
a |
Lactobacillus |
i |
Cheese |
|
b |
Saccharomyces cerevisiae |
ii |
Curd |
|
c |
Aspergillus niger |
iii |
Citric Acid |
|
d |
Acetobacter aceti |
iv |
Bread |
|
v |
Acetic Acid |
||
(A) a – ii, b – iv, c – v, d – iii (B) a – ii, b – iv, c – v, d – i (C) a – iii, b – iv, c – iii, d – v (D) a – ii, b – iv, c – iii, d – v
//X
//M1//QN23//MCQ//DL0
Which of the following organic acid was produced by fermentation?
(A) Oxalic acid (B) Lactic acid (C) Citric acid (D) Propionic acid
//X
//M1//QN24//MCQ//DL0
The starter of inoculum is added to fresh milk in order to convert milk in curd. The term starter or inoculum here refers to
(A) Bacteria rich in vitamin B12 (B) Bacteria rich in protein (C) Millions of LAB (D) All of the above
//X
//M1//QN25//MCQ//DL0
The Roquefort cheese are ripened by growing a _______ on them, which gives them a particular flavour.
(A) Fungi (B) Virus (C) Bacteria (D) Algae
//X
//M1//QN26//MCQ//DL0
From the options given below what increases vitamin B12 in our stomach and plays a very beneficial role in checking disease causing microbes?
(A) Antibiotic (B) Lactic acid bacteria (C) Saccharomyces cerevisiae (D) Aspergillus niger
//X
//M1//QN27//MCQ//DL0
Choose the correct sentences.
(A) ii, iii, iv (B) ii, iii (C) i, ii, iii (D) i, iii, iv
//X
//M1//QN28//MCQ//DL0
Yeast have been used for the commercial production of I. ethanol II. bread III. Incilage choose the correct option.
(A) I and II (B) I and III (C) I, II and III (D) None of these
//X
//M1//QN29//MCQ//DL0
Conversion of milk to curd improves its nutritional value by increasing the amount of:
(A) Vitamin E (B) Vitamin D (C) Vitamin B12 (D) Vitamin A
//X
//M1//QN30//MCQ//DL0
The large holes in Swiss cheese are due to production of a large amount of ___ a ___by a bacterium ___ b ___ here a and b refers to
(A) a-CO2, b-Penicillium roqueforti (B) a-CO2, b-Propionibacterium sharmanii (C) a-CO2, b-Penicillium notatum (D) a-CO2, b-Saccharomyces cerevisiae
//X
//M1//QN31//MCQ//DL0
Curdling of milk takes place by
(A) Streptococcus lactis (B) Streptococcus thermophilus (C) Lactobacillus lactis (D) All the above
//X
//M1//QN32//MCQ//DL0
Which micro-organism is used in the formation of cheese ?
(A) Streptococcus (B) Aspergillus (C) Acetic acid bacteria (D) Lactic acid bacteria
//X
//M1//QN33//MCQ//DL0
Which of the following food items are produced through fermentation by the microorganisms?
(A) I, II and III (B) I, III and IV (C) II, III and IV (D) I, II, III and IV
//X
//M1//QN34//MCQ//DL0
It is responsible for citric acid formation.
(A) Acetobacter aceti (B) Aspergillus niger (C) Streptococcus (D) None of the above
//X
//M1//QN35//MCQ//DL0
Antibiotics are mostly obtained from
(A) Fungi (B) Actinomycetes (C) Cyanobacteria (D) Both (A) and (B)
//X
//M1//QN36//MCQ//DL0
Streptokinase is synthesised by _______.
(A) Yeast (B) Virus (C) Bacteria (D) Algae
//X
//M1//QN37//MCQ//DL0
Match column I with column II and select the correct option using the code given below.
|
Column I |
Column II |
||
|
A |
Citric acid |
i |
Trichoderma |
|
B |
Cyclosporin A |
ii |
Clostridium |
|
C |
Statins |
iii |
Aspergillus |
|
D |
Butyric acid |
iv |
Monascus |
(A) A –iii, B –i, C –ii, D –iv (B) A –iii, B –i, C –iv, D –ii (C) A –i, B –iv, C – iii, D –ii (D) A –iii, B –iv, C –i, D –ii
//X
//M1//QN38//MCQ//DL0
Ethanol is commercially produced through a particular species of
(A) Saccharomyces (B) Clostridium (C) Trichoderma (D) Aspergillus
//X
//M1//QN39//MCQ//DL0
Identify the bacterial product.
(A) Cyclosporin - A (B) Citric Acid (C) Acetic acid (D) Drinks like ethanol
//X
//M1//QN40//MCQ//DL0
_______ is an antibiotic.
(A) Malic acid (B) Streptokinase (C) Penicillin (D) Statins
//X
//M1//QN41//MCQ//DL0
Which one of the following is not a biofertiliser?
(A) Agrobacterium (B) Rhizobium (C) Nostoc (D) Mycorrhiza
//X
//M1//QN42//MCQ//DL0
Which of the following is not an antibiotic?
(A) Griseofulvin (B) Cephalosporin (C) Citric acid (D) Streptomycin
//X
//M1//QN43//MCQ//DL0
Name the statin produced by the yeast, which have been commercialized as blood cholesterol lowering agent.
(A) Trichoderma polysporum (B) Monascus purpureus (C) Streptococcus (D) Lactobacillus
//X
//M1//QN44//MCQ//DL0
Sir Alexander Fleming extracted penicillin from:
(A) Penicillium citrinum (B) Penicillium notatum (C) Penicillium chrysogenum (D) Bacillus brevis
//X
//M1//QN45//MCQ//DL0
Statins used as blood cholesterol lowering agents are extracted from :
(A) Algae (B) Yeast (C) Virus (D) Bacteria
//X
//M1//QN46//MCQ//DL0
Which of the following is wrongly matched in the given table?
|
Microbe |
Product |
Application |
|
|
(a) |
Streptococcus |
Streptokinase |
Removal of clot from blood vessel |
|
(b) |
Clostridium |
Lipase |
Removal of oil stains |
|
(c) |
Trichoderma polysporum |
Cyclosporin A |
Immunosuppressive drug |
|
(d) |
Monacus purpureus |
Statins |
Lowering of blood cholesterol |
(A) A and R both are correct, and R is correct explanation of A. (B) A and R both are correct, but R is not correct explanation of A. (C) A is correct, but R is wrong (D) A is wrong, but R is correct
//X
//M1//QN47//MCQ//DL0
Wine is prepared by fermentation of
(A) Bacillus liquefaciens (B) Penicillium roqueforti (C) Saccharomyces cerevisiae (D) Streptococcus aureus
//X
//M1//QN48//MCQ//DL0
Cyclosporin A, used as immunosuppressive agent, is produced from
(A) Trichoderma polysporum (B) Monascus purpureus (C) Saccharomyces cerevisiae (D) Penicillium notatum
//X
//M1//QN49//MCQ//DL0
Which of the following is a commercial blood cholesterol lowering agent ?
(A) Cyclosporin A (B) Statin (C) Streptokinase (D) Lipases
//X
//M1//QN50//MCQ//DL0
Identify the fungi.
(A) Aspergillus niger (B) Acetobacter aceti (C) Clostridium butyricum (D) Lactobacillus
//X
//M1//QN51//MCQ//DL0
Yeast is used in the production of
(A) Ethyl alcohol (ethanol) (B) Acetic acid (C) Cheese (D) Curd
//X
//M1//QN52//MCQ//DL0
The organism used for alcohol fermentation is
(A) Penicillium (B) Pseudomonas (C) Aspergillus (D) Saccharomyces
//X
//M1//QN53//MCQ//DL0
Secondary sewage treatment is mainly a
(A) physical process (B) mechanical process (C) chemical process (D) biological process
//X
//M1//QN54//MCQ//DL0
Choose the correct pair
(A) Yeast - Ethanol production (B) Trichoderma polysporum - statins (C) Monascus purpureus - cyclosporin - A (D) All are correct
//X
//M1//QN55//MCQ//DL0
First antibiotic isolated was
(A) Terramycin (B) Neomycin (C) Penicillin (D) Streptomycin
//X
//M1//QN56//MCQ//DL0
_______ are produced without distillation.
(A) Whiskey and rum (B) Rum and wine (C) Beer and whisky (D) Wine and beer
//X
//M1//QN57//MCQ//DL0
Identify the correct pair :
(A) Aspergillus niger - Fungi - Ethanol (B) Monascus purpureus - Bacteria - Statins (C) Trichoderma polysporum - Fungi-Cyclosporin A (D) Saccharomyces cerevisiae - Bacteria - Ethanol
//X
//M1//QN58//MCQ//DL0
Azolla is used as a biofertiliser because it
(A) Has association of mycorrhiza (B) Multiplies at faster rate to produce massive biomass (C) Has association of nitrogen-fixing Rhizobium (D) Has association of nitrogen-fixing cyanobacteria
//X
//M1//QN59//MCQ//DL0
For the commercial and industrial production of Citric Acid, which of the following microbes is used?
(A) Clostridium butyricum (B) Aspergillus niger (C) Lactobacillus sp (D) Saccharomyces cerevisiae
//X
//M1//QN60//MCQ//DL0
What was discovered by Alexander Fleming ?
(A) Staphylococcus (B) Penicillium (C) Lactobacillus (D) Acetic acid
//X
//M1//QN61//MCQ//DL0
_______ are used in detergent formulations and are helpful in removing oily stains from the laundry.
(A) Cyclosporin - A (B) Penicillium notatum (C) Ethanol (D) Lipases
//X
//M1//QN62//MCQ//DL0
Monascus purpureus is a yeast used commercially in the production of
(A) ethanol (B) streptokinase for removing dots from the blood vessels (C) citric acid (D) statins - Blood cholesterol lowering agent
//X
//M1//QN63//MCQ//DL0
Which of the following organism is useful in the preparation of Roquefort cheese?
(A) Mucor (B) Rhizopus (C) Aspergillus (D) Penicillium
//X
//M1//QN64//MCQ//DL0
Match list I with list II
|
List I |
List II |
||
|
A |
Aspergillus niger |
i |
Acetic Acid |
|
B |
Acetobacter aceti |
ii |
Lactic Acid |
|
C |
Clostridium butyricum |
iii |
Citric Acid |
|
D |
Lactobacillus |
iv |
Butyric Acid |
(A) A – iii, B – i, C – iv, D – ii (B) A – i, B – ii, C – iii, D – iv (C) A – ii, B – iii, C – i, D – iv (D) A – iv, V – ii, C – i, D – iii
//X
//M1//QN65//MCQ//DL0
Yeast has been used for the commercial production of I. ethanol II. bread III. Toddy drink IV. Biogas. Choose the correct option.
(A) I and II (B) I and III (C) I, II and III (D) IV
//X
//M1//QN66//MCQ//DL0
What is used as an immunosuppressive agent in organ transplant?
(A) Cyclosporin - A (B) Statin (C) Penicillium (D) Protease
//X
//M1//QN67//MCQ//DL0
Which of the following is correctly matched for the product produced by them?
(A) Methanobacterium : Lactic acid (B) Penicillium notatum : Acetic acid (C) Saccharomyces cerevisiae : Ethanol (D) Acetobacter aceti : Antibiotics
//X
//M1//QN68//MCQ//DL0
Match the following columns and select the correct option.
|
Column I |
Column II |
||
|
a |
Clostridium butyricum |
i |
Cyclosporin - A |
|
b |
Trichoderma polysporum |
ii |
Butyric acid |
|
c |
Monascus purpureus |
iii |
Citric acid |
|
d |
Aspergillus niger |
iv |
Blood cholesterol lowering agent |
(A) a – iv, b – iii, c – ii, d – i (B) a – iii, b – iv, c – ii, d – i (C) a – ii, b – i, c – iv, d – iii (D) a – i, b – ii, c – iv, d – iii
//X
//M1//QN69//MCQ//DL0
Penicillium notatum stops the growth of
(A) Aspergillus niger (B) Trichoderma polysporum (C) Monascus purpureus (D) Staphylococci (Bacteria)
//X
//M1//QN70//MCQ//DL0
Primary treatment is the
(A)
//X
//M1//QN71//MCQ//DL0
In a pond, if there is too much wastage, then the BOD of the pond will
(A) Increase (B) Decrease (C) Remain same (D) Both (A) and (B)
//X
//M1//QN72//MCQ//DL0
The domestic sewage in large cities.
(A) has a high BOD as it contains both aerobic and anaerobic bacteria (B) is processed by aerobic and then anaerobic bacteria in the secondary treatment in sewage treatment plants (STPs) (C) when treated in STPs does not really require the aeration step as the sewage contains adequate oxygen. (D) has very high amount of suspended solids and dissolved salts.
//X
//M1//QN73//MCQ//DL0
Activated sludge means :
(A) Sedimented flocs (B) Aerobic bacteria (C) Inaerobic bacteria (D) Primary sludge
//X
//M1//QN74//MCQ//DL0
A nitrogen fixing microbe associated with Azolla in rice field is
(A) Spirulina (B) Anabaena (C) Frankia (D) Tolypothrix
//X
//M1//QN75//MCQ//DL0
Which of the following is put into Anaerobic sludge digester for further sewage treatment?
(A) Activated sludge (B) Primary sludge (C) Floating debris (D) Effluents of primary treatment
//X
//M1//QN76//MCQ//DL0
A : STP purify sewage
(A) A and R both are correct (B) A and R both are incorrect (C) A is incorrect, R is correct (D) A is correct, R is incorrect
//X
//M1//QN77//MCQ//DL0
Organisms called methanogens are most abundant in a
(A) Sulphur rock (B) Cattle yard (C) Polluted steam (D) Hot spring
//X
//M1//QN78//MCQ//DL0
Which of the following organisations have developed technology for biogas production?
(A) TARI and ICZN (B) ICBN and KVIC (C) IRRI and IARI (D) KVIC and IARI
//X
//M1//QN79//MCQ//DL0
Which of the following statements about methanogens is not correct?
(A) They can be used to produce biogas (B) They are found in the rumen of cattle and their excreta (C) They grow aerobically and breakdown cellulose rich food (D) They produce methane gas
//X
//M1//QN80//MCQ//DL0
The guts of cow and buffalo possess
(A) Methanogens (B) Cyanobacteria (C) Fucus sp. (D) Chlorella sp.
//X
//M1//QN81//MCQ//DL0
If bacteria grow on cellulosic material, they produce large amount of which gas ?
(A) Ethane (B) Oxygen (C) Methane (D) Propane
//X
//M1//QN82//MCQ//DL0
Methanogens found in
(A) Biogas plant (B) Rumen of cattle (C) and (B) are correct (D) and (B) are incorrect
//X
//M1//QN83//MCQ//DL0
Which is correct group of gases for anaerobic digestion ?
(A) Carbon dioxide, hydrogen sulphide, methane, ethane. (B) Methane, oxygen, carbon dioxide (C) Methane, hydrogen sulphide, carbon dioxide (D) Ethane, methane, hydrogen sulphide
//X
//M1//QN84//MCQ//DL0
Bt cotton is used to destroy
(A) Caterpillar of butterfly (B) Cockroach alimentary canal (C) Aschleminthes (D) Mosquito's intestine
//X
//M1//QN85//MCQ//DL0
Which is a microbial insecticide?
(A) Bacillus thuringiensis (B) Bacillus subtilis (C) Bacillus polymixa (D) Bacillus brevis
//X
//M1//QN86//MCQ//DL0
Which of the following fungus produces cyclosporin A which is used as an immunos uppressive agent in organ - transplant patients?
(A) Alternaria (B) Neurospora (C) Trichoderma (D) Puccinia
//X
//M1//QN87//MCQ//DL0
Trichoderma are _______.
(A) Symbotic algae (B) Photosynthetic (C) Symbiotic fungi (D) free-living fungi
//X
//M1//QN88//MCQ//DL0
The phenomenon of using a predator for controlling a pest is
(A) Biological control (B) Genetic engineering (C) Artificial control (D) Confusion technique
//X
//M1//QN89//MCQ//DL0
Genus of Baculo virus is
(A) Retrovirus (B) Nucleopolyhedrovirus (C) TMV (D) Adenovirus
//X
//M1//QN90//MCQ//DL0
The organism which is useful to produce chemical which inhibit immunity during organ transplant.
(A) Streptococcus (B) Monascus purpureus (C) Lactobacillus (D) Trichoderma polysporum
//X
//M1//QN91//MCQ//DL0
Microbe used for biocontrol of pest butterfly caterpillar is
(A) Saccharomyces cerevisiae (B) Bacillus thuringiensis (C) Streptococcus sp. (D) Trichoderma sp.
//X
//M1//QN92//MCQ//DL0
A common biocontrol agent for the control of plant diseases is
(A) Baculovirus (B) Bacillus thuringiensis (C) Glomus (D) Trichoderma
//X
//M1//QN93//MCQ//DL0
When a natural predator is applied on the other pathogenic organisms to control them, this process is called.
(A) Biological control (B) Genetic engineering (C) Confusion technique (D) Artificial control
//X
//M1//QN94//MCQ//DL0
Latest trend in plant disease control is
(A) Chemical control (B) Biological control (C) Good manure and fertilizer (D) Breeding for disease resistance
//X
//M1//QN95//MCQ//DL0
Biopesticides include
(A) Bioherbicides (B) Bioinsecticides (C) Bioherbicides and bioinsecticides (D) Bioherbicides, bioinsecticides and biofertilizers
//X
//M1//QN96//MCQ//DL0
Biofertilizers include
(A) Nitrogen fixing bacteria (B) Nitrogen fixing cyanobacteria (C) Both bacteria and cyanobacteria (D) Bacteria, cyanobactria and mycorrhizal fungi
//X
//M1//QN97//MCQ//DL0
Which one is a nonsymbiotic nitrogen fixer?
(A) Rhizobium (B) Oscillatoria (C) Nostoc (D) Lactobacillus
//X
//M1//QN98//MCQ//DL0
Aquatic fern which is an excellent biofertilizer.
(A) Salvinia (B) Azolla (C) Marsilea (C) Chlorella sp.
//X
//M1//QN99//MCQ//DL0
Which of the following is free living aerobic and nonphotosynthetic nitrogen fixing bacterium?
(A) Rhizobium (B) Nostoc (C) Azospirillum (D) Azotobacter
//X
//M1//QN100//MCQ//DL0
Select the mismatch.
(A) Rhodospirillum - Mycorrhiza (B) Anabaena - Nitrogen fixer (C) Rhizobium-Alfalfa (D) Frankia-Alnus
//X
//M1//QN101//MCQ//DL0
What is required for nitrogen fixation by Rhizobium?
(A) Potassium (B) Phosphorus (C) Nitrate (D) Sodium
//X
//M1//QN102//MCQ//DL0
Azolla enriches rice fields with nitrogen due to its association with
(A) Anabaena (B) Nostoc (C) Rhizobium (D) Frankia
//X
//M1//QN103//MCQ//DL0
Among the following pairs of microbes, which pair has both the microbes that can be used as biofertilizers?
(A) Aspergillus and Rhizopus (B) Rhizobium and Rhizopus (C) Cyanobacteria and Rhizobium (D) Aspergillus and Cyanobacteria
//X
//M1//QN104//MCQ//DL0
Symbiotic nitrogen fixation in root nodules of some legumes is caused by
(A) Nitrosomonas (B) Rhizobium (C) Azotobacter (D) Nitrobacter
//X
//M1//QN105//MCQ//DL0
Most famous nitrogen fixing bacterium/biofertilizer is
(A) Nitrobacter (B) Nitrosomonas (C) Nitrococcus (D) Rhizobium
//X
//M1//QN106//MCQ//DL0
Mycorrhiza is helpful in
(A) Synthesis of food (B) Getting nutrients from soil (C) Providing resistance against different regulators (D) Increase the fertility of soil
//X
//M1//QN107//MCQ//DL0
Rhizosphere is the region where
(A) Rhizobium forms root nodules (B) Algae and root make contact (C) Soil and root make contact (D) Bacterial and root nearly make contact
//X
//M1//QN108//MCQ//DL0
The common nitrogen fixer in paddy fields is
(A) Rhizobium (B) Azospirillum (C) Oscillatoria (D) Frankia
//X
//M1//QN109//MCQ//DL0
A nitrogen fixing bacterium that forms a loose association with the roots of plants is
(A) Azotobacter (B) Bacillus polymyxa (C) Clostridium (D) Azospirillum
//X
//M1//QN110//MCQ//DL0
Biofertilizers
(A) Kill pests (B) Prevent pest growth (C) Retain soil fertility (D) All of the above
//X
//M1//QN111//MCQ//DL0
What is correct about nitrogen fixation by legumes? They fix nitrogen through
(A) Specialised bacteria in their roots (B) Specialised bacteria in their leaves (C) Independent of bacteria that live in their roots (D) The statement is wrong
//X
//M1//QN112//MCQ//DL0
If wheat field is inoculated with Rhizobium
(A) Soil will become nitrogen rich (B) No effect on soil nitrogen (C) Soil will be depleted of nitrogen (D) Soil will become rich in calcium
//X
//M1//QN113//MCQ//DL0
Some blue green algae can be used as biofertilizer as they are
(A) Photosynthetic (B) Surrounded by mucilage (C) Growing every where (D) Capable of fixing nitrogen
//X
//M1//QN114//MCQ//DL0
Biofertilizers include
(A) Cow dung manure and farmyard waste (B) A quick growing crop ploughed back (C) BGA Anabaena and Azolla (D) All the above
//X
//M1//QN115//MCQ//DL0
Which of the following can use molecular nitrogen as nutrient?
(A) Methanomonas (B) Mucor (C) Rhizobium (D) Spirogyra
//X
//M1//QN116//MCQ//DL0
The nitrogen fixing symbiotic organism present in Azolla is
(A) Nostoc (B) Anabaena (C) Aulosira (D) Azospirillum
//X
//M1//QN117//MCQ//DL0
What adds organic matter to the soil and increase its fertility?
(A) Pseudomonas (B) Blue green algae (C) Baculo virus (D) LAB
//X
//M1//QN118//MCQ//DL0
They are mostly used in organic fertilizer.
(A) Bacteria (B) Cyanobacteria (C) Fungi (D) All are correct
//X
//M1//QN119//MCQ//DL0
Which bacteria fix atmospheric nitrogen while they are free - living in the soil?
(A) Azotobacter (B) Rhizobium (C) Cyanobacteria (D) Anabaena
//X
//M1//QN120//MCQ//DL0
Mycorrhiza represents
(A) Antagonism (B) Endemism (C) Symbiosis (D) Parasitism
//X
//M1//QN121//MCQ//DL0
Due to which of the following organisms, yield of rice is increased?
(A) Anabaena (B) Bacillus popilliae (C) Sesbani (D) Bacillus polymena
//X
//M1//QN122//MCQ//DL0
Assertion : LAB improves the Vit-B12 Quality Reason : Lactobacillus produces lactic acid
(A) A and R both are correct, and R is correct explanation of A. (B) A and R both are correct, but R is not correct explanation of A. (C) A is correct, but R is wrong (D) A is wrong, but R is correct
//X
//M1//QN123//MCQ//DL0
Assertion : Protease enzyme is produced by microbes. Reason : Protease enzyme is used in removing oily stains from the laundry
(A) A and R both are correct, and R is correct explanation of A. (B) A and R both are correct, but R is not correct explanation of A. (C) A is correct, but R is wrong (D) A is wrong, but R is correct
//X
//M1//QN124//MCQ//DL0
Assertion : Cyclosporin-A is used as an immunosuppressive agent in organ transplant patients. Reason : Cyclosporin-A is obtain from Trichoderma polysporum (yeast).
(A) A and R both are correct, and R is correct explanation of A. (B) A and R both are correct, but R is not correct explanation of A. (C) A is correct, but R is wrong (D) A is wrong, but R is correct
//X
//M1//QN125//MCQ//DL0
Assertion : The excreta of cattle is rich in methanogens bacteria Reason : Dung can be used in biogas
(A) A and R both are correct, and R is correct explanation of A. (B) A and R both are correct, but R is not correct explanation of A. (C) A is correct, but R is wrong (D) A is wrong, but R is correct
//X
//M1//QN126//MCQ//DL0
Assertion : Bacillus thuringiensis is used in the Pest Control agent in agriculture Reason : Certain genus of fungi is also used as pest control agent in agriculture
(A) A and R both are correct, and R is correct explanation of A. (B) A and R both are correct, but R is not correct explanation of A. (C) A is correct, but R is wrong (D) A is wrong, but R is correct
//X
//M1//QN127//MCQ//DL0
Assertion : Cyclosporin-A is used during organ transplant in patient Reason : It lowers down blood cholesterol level
(A) A and R both are correct, and R is correct explanation of A. (B) A and R both are correct, but R is not correct explanation of A. (C) A is correct, but R is wrong (D) A is wrong, but R is correct
//X
//M1//QN128//MCQ//DL0
Assertion : LAB are used in bread making Reason : Lactobacillus are used in curd making
(A) A and R both are correct, and R is correct explanation of A. (B) A and R both are correct, but R is not correct explanation of A. (C) A is correct, but R is wrong (D) A is wrong, but R is correct
//X
//M1//QN129//MCQ//DL0
Assertion : Instead of chemical pesticides, biological pest control are used Reason : This is an equilibrium pest control.
(A) A and R both are correct, and R is correct explanation of A. (B) A and R both are correct, but R is not correct explanation of A. (C) A is correct, but R is wrong (D) A is wrong, but R is correct
//X
//M1//QN130//MCQ//DL0
Assertion : Biological control destroy pest. Reason : Pest have harmful effect on a crop leading decrease in productivity
(A) A and R both are correct, and R is correct explanation of A. (B) A and R both are correct, but R is not correct explanation of A. (C) A is correct, but R is wrong (D) A is wrong, but R is correct
//X
//M1//QN131//MCQ//DL0
Assertion : An effective and pollution free farming can be achieved by use of organic fertilisers Reason : Chemical fertilisers cause Pollution
(A) A and R both are correct, and R is correct explanation of A. (B) A and R both are correct, but R is not correct explanation of A. (C) A is correct, but R is wrong (D) A is wrong, but R is correct
//X
//M1//QN132//MCQ//DL0
Assertion : By the use of chemical process, the organic substances are used up in the sewage Reason : Bacteria and other microbes utilized organic substances in the water.
(A) A and R both are correct, and R is correct explanation of A. (B) A and R both are correct, but R is not correct explanation of A. (C) A is correct, but R is wrong (D) A is wrong, but R is correct
//X
//M1//QN133//MCQ//DL0
Assertion : Cellulase enzyme is used in removing oily stains from the laundry Reason : Streptokinase is used as a clot buster for removing clots from the blood vessels
(A) A and R both are correct, and R is correct explanation of A. (B) A and R both are correct, but R is not correct explanation of A. (C) A is correct, but R is wrong (D) A is wrong, but R is correct
//X
//M1//QN134//MCQ//DL0
Assertion : LAB are very important for digestive system Reason : LAB also protects us from disease causing microbes.
(A) A and R both are correct, and R is correct explanation of A. (B) A and R both are correct, but R is not correct explanation of A. (C) A is correct, but R is wrong (D) A is wrong, but R is correct
//X
//M1//QN135//MCQ//DL0
Assertion : Yeasts such as Saccharomyces cerevisiae are used in baking industry. Reason : Carbon dioxide produced during fermentation causes bread dough to rise by thermal expansion.
(A) A and R both are correct, and R is correct explanation of A. (B) A and R both are correct, but R is not correct explanation of A. (C) A is correct, but R is wrong (D) A is wrong, but R is correct
//X
//M1//QN136//MCQ//DL0
Assertion : BOD is a measure of the organic matter present in the water. Reason : The lower the BOD of water, lower is its polluting potentials.
(A) A and R both are correct, and R is correct explanation of A. (B) A and R both are correct, but R is not correct explanation of A. (C) A is correct, but R is wrong (D) A is wrong, but R is correct
//X
//M1//QN137//MCQ//DL0//EQ
Which gases are produced in labelled part X in given figure ?
(A) O2, CO, CO2, H2, CH4 (B) CO2, O2, H2 (C) CH4, H2, CO2, O2 (D) CO2, H2, CH4
//X
//M1//QN138//MCQ//DL0
Choose the correct option for the given diagram from the following.
(A) Adenovirus - cause (B) Bacteriophage - (C) Viroid - Potato spindle (D) Prion - Alzheimer's disease
//X