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Biogas is produced by
General Science Biology Zoology Class 12th NEET UG NEET UG Preparation
Q. 23 of Quiz-1459 (Que-ID : 3391)
Biogas is produced by
- aerobic breakdown of biomass
- anaerobic breakdown of biomass
- with the help of methanogenic bacteria
- both (b) and (c)
Ans → (d)both (b) and (c)
Explanation → Biogas is produced by both (b) and (c)
This question is taken from this post → Microbes in Human Welfare : Class - 12th (Biology) Practice Test | MCQs for NEET - attemp/practice
More MCQs in - Microbes in Human Welfare : Class - 12th (Biology) Practice Test | MCQs for NEET
Q. 1 of Quiz-1459 (Que-ID : 3369)
Integrated Pest Management (IPM) discourages the excessive used of
- biological methods
- chemical pesticides
- mechanical methods
- all of these
Q. 2 of Quiz-1459 (Que-ID : 3370)
Which of the following is not used as a biopesticide ?
- Trichoderma harzianum
- Nucleopolyhedrovirus
- Xanthomonas campestris
- Bacillus thuringiensis
Q. 3 of Quiz-1459 (Que-ID : 3371)
Organic farming does not include
- green manures
- chemical fertilisers
- farmyard manures
- compost
Q. 4 of Quiz-1459 (Que-ID : 3372)
Organic farming includes
- use of fertilisers and pesticides of biological origin
- IPM (Integrated Pest Management)
- locally developed pest resistant varieties
- all of these
Q. 5 of Quiz-1459 (Que-ID : 3373)
Living organisms used to enrich the nutrient quality of the soil are called as
- biocontrol agents
- biofertilisers
- synthetic fertilisers
- natural fertilisers
Q. 6 of Quiz-1459 (Que-ID : 3374)
Biofertilisers are
- some bacteria and cyanobacteria
- fertilisers formed by ploughing in barseem
- fertilisers obtained by decay of dead organisms
- fertilisers prepared by mixing cattle dung with crop residues
Q. 7 of Quiz-1459 (Que-ID : 3375)
Biofertilisers are the living organisms which
- bring about soil nutrient enrichment
- maximise the ecological benefits
- minimise the environmental hazards
- all of these
Q. 8 of Quiz-1459 (Que-ID : 3376)
Which one of the following can be used as biofertiliser in cotton field ?
- Azolla-Anabaena
- Streptococcus
- Azospirillum
- Azotobacter chroococcum
Q. 9 of Quiz-1459 (Que-ID : 3377)
The symbiotic association between fungi and roots of higher plants is referred to as
- lichen
- mycorrhiza
- biofertiliser
- biocontrol agent
Q. 10 of Quiz-1459 (Que-ID : 3378)
Cyanobacteria are
- heterotrophs
- chemotrophs
- autotrophs
- organotrophs
Q. 11 of Quiz-1459 (Que-ID : 3379)
Enzyme which has the fibrinolytic effect is
- protease
- amylase
- lipase
- streptokinase
Q. 12 of Quiz-1459 (Que-ID : 3380)
Statins used for lowering blood cholesterol level are extracted from
- algae
- bacteria
- viruses
- yeast
Q. 13 of Quiz-1459 (Que-ID : 3381)
Monascus purpureus is a yeast commercially used in the production of
- citric acid
- ethanol
- blood cholesterol lowering statins
- streptokinase for removing clots from blood vessels
Q. 14 of Quiz-1459 (Que-ID : 3382)
During the primary treatment of sewage, solid particles that settle down are called
- floes
- primary sludge
- activated sludge
- anaerobic sludge
Q. 15 of Quiz-1459 (Que-ID : 3383)
The purpose of biological treatment of waste water is to
- reduce BOD
- increase BOD
- reduce sedimentation
- increase sedimentation
Q. 16 of Quiz-1459 (Que-ID : 3384)
The masses of bacteria held together by slime and fungal filaments to form mesh-like structures are called as
- primary sludge
- floes
- activated sludge
- anaerobic sludge
Q. 17 of Quiz-1459 (Que-ID : 3385)
BOD is………..in polluted water and in potable water.
- more, less
- less, more
- less in both
- medium in both
Q. 18 of Quiz-1459 (Que-ID : 3386)
n the sewage treatment, bacterial floes are allowed to sediment in a settling tank. This sediment is called as
- inactivated sludge
- activated sludge
- primary sludge
- secondary sluge
Q. 19 of Quiz-1459 (Que-ID : 3387)
Which of the following steps is taken by the Ministry of Environment and Forests to protect rivers from water pollition ?
- Ganga Action Plan
- Narmada Action Plan
- Yamuna Action Plan
- Both (a) and (c)
Q. 20 of Quiz-1459 (Que-ID : 3388)
Methanogens, growing anaerobically on cellulosic material produce
- methane
- methane and carbon dioxide
- methane and hydrogen
- methane, carbon dioxide and hydrogen
Q. 21 of Quiz-1459 (Que-ID : 3389)
Which of the following bacteria is present in the rumen of cattle ?
- Azotobacter
- Rhizobium
- Methanobacterium
- Azospirillum
Q. 22 of Quiz-1459 (Que-ID : 3390)
Process of biogas production is
- aerobic process
- anaerobic process
- active process
- passive process
Q. 23 of Quiz-1459 (Que-ID : 3391)
Biogas is produced by
- aerobic breakdown of biomass
- anaerobic breakdown of biomass
- with the help of methanogenic bacteria
- both (b) and (c)
Q. 24 of Quiz-1459 (Que-ID : 3392)
Dragonflies are used to get rid of
- mosquitoes
- aphids
- butterfly caterpillars
- both (a) and (b)
Q. 25 of Quiz-1459 (Que-ID : 3393)
A microbial biocontrol agent that can be used to control butterfly caterpillars is
- Trichoderma polysporum
- Bacillus thuringiensis
- Streptococcus
- mycorrhiza
More MCQs In - General Science Biology Zoology Class 12th NEET UG NEET UG Preparation
Q. 17 of Quiz- (Que-ID : 3135)
Diffusion rate is affected by
- temperature
- membrane permeability
- gradient of concentration
- all of these
Q. 9 of Quiz- (Que-ID : 3152)
Which of the following influence feedback inhibition of enzyme?
- End product
- External factors
- Enzyme
- Substrate
Q. 20 of Quiz- (Que-ID : 2788)
Which of the following is correct?
- Musca domestica Order ? Diptera Family ? Muscidae Phylum ? Arthropoda
- Mangifera indica Order ? Sapindales Family ? Anacardiaceae Phylum ? Gymnospermae
- Triticum aestivum Order ? Poles Family ? Monocotyledons Phylum ? Angiospermae
- Panthera leo Order ? leo Family ? Felidae Phylum ? Mammalia
Q. 12 of Quiz- (Que-ID : 3530)
Which one of the following is not a greenhouse gas?
- Methane
- CO2
- Chlorofluoro carbon
- Hydrogen
Q. 8 of Quiz- (Que-ID : 3151)
Assertion: Arachidic acid is an unsaturated fatty acid Reason: There are one or more double bonds between carbon atoms in unsaturated fatty acids
- Both Assertion and Reason are true and Reason is the correct explanation of the Assertion
- Both Assertion and Reason are true but the Reason is not the correct explanations of Assertion
- Assertion is true, but Reason is false.
- Both Assertion and Reason are false
Q. 18 of Quiz- (Que-ID : 3161)
The minimum amount of energy required to initiate a chemical reaction is called
- enzymatic energy
- activation energy
- substrate energy
- initiation energy
Q. 23 of Quiz- (Que-ID : 3191)
The epithelium found in the lining layer of stomach and intestine is
- Squamous epithelium
- Cuboidal epithelium
- Columnar epithelium
- Ciliated columnar epithelium
Q. 1 of Quiz- (Que-ID : 2969)
Which among the following is not ammonotelic
- Aquatic amphibian
- Aquatic insect
- Bony fishes
- Mammal
Q. 10 of Quiz- (Que-ID : 2803)
When a neuron is in resting state i.e. not conducting any impulse, the axonal membrane is
- Comparatively more permeable to K+ ions and nearly impermeable to Na+ ions
- Comparatively more permeable to Na+ ions and nearly impermeable to K+ ions
- Equally permeable to both Na+ and K+ ions
- Impermeable to both Na+ and K+ ions
Q. 19 of Quiz- (Que-ID : 3262)
Water-Vascular system is found in
- Sea-anemone
- Sea-pen
- Sea-cucumber
- Sea-horse
Q. 17 of Quiz- (Que-ID : 3460)
The maximum growth rate occurs in
- Lag phase
- Exponential, phase
- Stationary phase
- Senescent phase
Q. 8 of Quiz- (Que-ID : 2726)
Common feature of archaebacteria
- Structure of cell membrane
- Structure of cell wall
- Has fatty acid synthetase
- Structure of flagellin protein
Q. 13 of Quiz- (Que-ID : 3331)
The most abundant class of immunoglobulins (Igs) in the body is
- IgA
- IgG
- IgE
- IgM
Q. 8 of Quiz- (Que-ID : 2726)
Common feature of archaebacteria
- Structure of cell membrane
- Structure of cell wall
- Has fatty acid synthetase
- Structure of flagellin protein
Q. 19 of Quiz- (Que-ID : 2988)
Angiotensinogen 2 is
- Vasoconstriction
- Vasodilation
- Both a and b
- None of the above
Q. 7 of Quiz- (Que-ID : 3325)
Which one of the following sets includes bacterial diseases ?
- Tetanus, tuberculosis, measles
- Diptheria, leprosy, plague
- Cholera, typhoid, mumps
- Malaria, mumps, poliomyelits
Q. 7 of Quiz- (Que-ID : 3500)
Biodiversity Act of India was passed by the Parliament in the year
- 1996
- 1992
- 2002
- 2000
Q. 11 of Quiz- (Que-ID : 3079)
Discovery of Emerson effect has already shown the
- two distinct photochemical reactions
- light and dark reactions of photosynthesis
- photophosphorylation
- photorespiration
Q. 19 of Quiz- (Que-ID : 3337)
Vaccine against polio viruses is an example of
- auto-immunisation
- passive immunisation
- active immunisation
- simple immunisation
Q. 13 of Quiz- (Que-ID : 3406)
DNA element with ability to change its position is called
- Cistron
- Transposon
- Intron
- Ricon
Q. 15 of Quiz- (Que-ID : 1864)
Vande Mataram was taken from-
- Akbarnama
- Rajtarangini
- Anand Math
- Akbar Kosh
Q. 16 of Quiz- (Que-ID : 3409)
Golden rice is a promising transgenic crop. When released for cultivation, it will help in :
- High lysin content
- Pest resistance
- High protien content
- High vitamin A content
Q. 22 of Quiz- (Que-ID : 2665)
Whose role in respiratory rhythm regulation is insignificant
- Co2
- O2
- Both a and b
- None of the above
Q. 5 of Quiz- (Que-ID : 3048)
TCA cycle was discovered by
- Otto Meyerhof
- Hans Kreb
- Gustav Embden
- All of these
Q. 4 of Quiz- (Que-ID : 3172)
Choose the incorrect statement.
- Vascular system of frog is closed type.
- Frogs have 4-chambered heart.
- During aestivation and hibernation, skin acts as respiratory organ.
- All the statements are correct
Q. 1 of Quiz- (Que-ID : 3269)
Rhodophyceae is called red algae because of the pigment
- Fucoxanthin
- Phycoerythrin
- Carotenoids
- Chlorophyll c
Q. 21 of Quiz- (Que-ID : 3289)
In chlorophyta the mode of sexual reproduction is
- Isogamy
- Anisogamy
- Oogamy
- Isogamy, Anisogamy and oogamy
Q. 23 of Quiz- (Que-ID : 2636)
Dentine is originated from which cell
- Amiloblast cell
- Odontioblast cell
- Chief cell
- Peptic cell
Q. 22 of Quiz- (Que-ID : 3165)
Enormous diversity of protein molecules is due to
- R groups of amino acids
- Sequence of amino acids
- Peptide bonds
- Amino groups of amino acids
Q. 12 of Quiz- (Que-ID : 2980)
Bowman capsule with glomerulus is known as
- Malphigian body
- Renal corpuscle
- Malphigian capsule
- Both b and c
Q. 18 of Quiz- (Que-ID : 3486)
The average efficiency of energy transfer from herbivoure to carnivorce level is
- 5%
- 10%
- 20%
- 30%
Q. 23 of Quiz- (Que-ID : 3391)
Biogas is produced by
- aerobic breakdown of biomass
- anaerobic breakdown of biomass
- with the help of methanogenic bacteria
- both (b) and (c)
Q. 5 of Quiz- (Que-ID : 3023)
Exponential growth of the plants is express as W1 = W0 ert r represents
- ability of the plant to produce new cells
- efficiency index
- relative growth rate
- all of the above
Q. 2 of Quiz- (Que-ID : 3245)
Sharks, skates, and rays are also called ______ fishes
- Jawless
- Bony
- Cartilaginous
- Freshwater
Q. 12 of Quiz- (Que-ID : 3205)
Which of the following helps in the curling of the leaf surface?
- Bulliform cells
- Xylem tissue
- Palisade parenchyma
- Bundle sheath cells
Q. 6 of Quiz- (Que-ID : 3024)
Opening of floral buds into flowers, is a type of:
- Autonomic movement of variation
- Autonomic movement of locomotion
- Autonomic movement of growth
- Paratonic movement of growth
Q. 14 of Quiz- (Que-ID : 3457)
Winter sleep is also called as
- Hibernation
- Suspend
- Migrate
- Aestivation
Q. 20 of Quiz- (Que-ID : 3188)
Which is not a part of reproductive system of female cockroach?
- Phallic gland
- Vestibulum
- Gonapophyses
- Collaterial glands
Q. 12 of Quiz- (Que-ID : 3180)
Which one of the following is a scent gland of mammals?
- Bartholin
- Anal
- Prostate
- Adrenal
Q. 9 of Quiz- (Que-ID : 3227)
Thors and spines are
- homologous organs
- analogous organs
- thron is homologous while spine is analogous
- spine is homologous while is analogous
Q. 12 of Quiz- (Que-ID : 2980)
Bowman capsule with glomerulus is known as
- Malphigian body
- Renal corpuscle
- Malphigian capsule
- Both b and c
Q. 8 of Quiz- (Que-ID : 3351)
Continued inbreeding, especially close inbreeding generally results in
- inbreeding depression
- inbreeding stimulation
- inbreeding hybridisation
- inbreeding mutation
Q. 22 of Quiz- (Que-ID : 3515)
Which group of vertebrates comprises the highest number of endangered species?
- Fishes
- Reptiles
- Birds
- Mammals
Q. 6 of Quiz- (Que-ID : 2749)
Anabolic steroids are ___ versions of testosterone
- Effective
- Synthetic
- Natural
- Ineffective
Q. 13 of Quiz- (Que-ID : 2831)
The male gametes of rice plant have 12 chromosomes in their nucleus. The chromosome number in the female gamete, zygote and the cells of the seedling will be, respectively
- 12, 24, 12
- 24, 12, 12
- 12, 24, 24
- 24, 12, 24
Q. 16 of Quiz- (Que-ID : 3434)
The confirmatory test used to diagnose AIDS is:
- ELISA
- Western Plot
- ESR
- PCR
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