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decomposers are
General Science Biology Zoology Class 12th NEET UG NEET UG Preparation
Q. 25 of Quiz-1471 (Que-ID : 3493)
decomposers are
- Autotrophs
- Autohetrotrophs
- Organotrophs
- Heterotrophs
Ans → (d)Heterotrophs
Explanation → Heterotrophs
This question is taken from this post → Ecosystem : Biology (Class 12th) Revision test | MCQs for NEET - attemp/practice
More MCQs in - Ecosystem : Biology (Class 12th) Revision test | MCQs for NEET
Q. 2 of Quiz-1471 (Que-ID : 3470)
Soil particle determine the character of
- Organisation
- Biomass
- Area capacity
- Soil plants
Q. 3 of Quiz-1471 (Que-ID : 3471)
Plant roots soil water is
- Cellular water
- Surface water
- Humidity water
- Gravitational water
Q. 4 of Quiz-1471 (Que-ID : 3472)
Exchange of water in submerged plant
- Stomata
- Normal surface
- Hydathode
- Lenticel
Q. 5 of Quiz-1471 (Que-ID : 3473)
Submerged Rooted Hydrophyte are:
- Uticularia
- Prapa
- Nymphea
- vallisnaria
Q. 6 of Quiz-1471 (Que-ID : 3474)
Water co-deficient contains:
- Large thin walled cells
- Large-vacuoles
- Membrane
- All of these
Q. 7 of Quiz-1471 (Que-ID : 3475)
Xerophyte Contains
- Deep roots
- Sunken stomata
- Thick cuticle
- All of these
Q. 8 of Quiz-1471 (Que-ID : 3476)
Small extremite animals of tropical region
- Allen’s law
- Bergmen’s law
- Dollo’s law
- Cope’s law
Q. 10 of Quiz-1471 (Que-ID : 3478)
Physical and chemical properties of soil studied by
- Climatic factor
- Biotic factor
- Soil factor
- Topographic factor
Q. 11 of Quiz-1471 (Que-ID : 3479)
Identity the Hetero Organism
- Pistia
- Hydrilla
- Vallisnaria
- Casurina
Q. 12 of Quiz-1471 (Que-ID : 3480)
That animal who can bear one third loss of water of one third body weight is
- Necturus
- Camel
- Wall Lizzard
- Kyton
Q. 16 of Quiz-1471 (Que-ID : 3484)
Kanha National Park is famous for
- For Birds
- For Tendua
- For Tiger
- For Crocodile
Q. 17 of Quiz-1471 (Que-ID : 3485)
During food chain the maximum energy is stored in
- Producers
- Decomposers
- Herbivoures
- Camivourse
Q. 18 of Quiz-1471 (Que-ID : 3486)
The average efficiency of energy transfer from herbivoure to carnivorce level is
- 5%
- 10%
- 20%
- 30%
Q. 19 of Quiz-1471 (Que-ID : 3487)
Ecological pyramids were first devised by
- Charles Eltom
- R. Hesse
- R.A. Lindemann
- Justus von Liebig
Q. 20 of Quiz-1471 (Que-ID : 3488)
Which of the following ecosystem has highest gross primary productivity
- Grassland
- Coral reefs
- Mangrooves
- Rainforests
Q. 21 of Quiz-1471 (Que-ID : 3489)
In the phosphorus cycle, weathring makes phosophate available first to
- Producers
- Decomposers
- Consumers
- None of these
Q. 22 of Quiz-1471 (Que-ID : 3490)
Which types of the following pyramid are never inverted?
- Pyramid of energy
- Pyramid of biomass
- Pyramid of number
- Pyramid of dry biomass
Q. 23 of Quiz-1471 (Que-ID : 3491)
Biosphere means
- Atmosphere
- Lithosphere and ionosphered
- Atmosphere, lithosphere and hydrosphere
- Hydrosphere lithosphere and ionsophere
Q. 24 of Quiz-1471 (Que-ID : 3492)
Best type of pyramid which is always true is:
- Pyramid or energy
- Pyramid of Biomass
- Pyramid of number
- Both (a) and (c)
Q. 25 of Quiz-1471 (Que-ID : 3493)
decomposers are
- Autotrophs
- Autohetrotrophs
- Organotrophs
- Heterotrophs
More MCQs In - General Science Biology Zoology Class 12th NEET UG NEET UG Preparation
Q. 10 of Quiz- (Que-ID : 3428)
Somatic hybridization can be done by:
- By Protoplast fusion
- By Haploid anther
- By cell culture
- By Pollen culture
Q. 6 of Quiz- (Que-ID : 2849)
From among the sets of terms given below, identify those that are associated with the gynoecium
- Stigma, ovule, embryo sac, placenta
- Thalamus, pistil, style, ovule
- Ovule, ovary, embryo sac, tapetum
- Ovule, stamen, ovary, embryo sac
Q. 6 of Quiz- (Que-ID : 3199)
Fusifrom initial cells of cambium from
- vascular rays
- tracheary elements
- ray parenchyma
- phloem parenchyma
Q. 21 of Quiz- (Que-ID : 3539)
The natural aging of the lake is called
- Biomagnification
- Eutrophication
- BOD
- None of the above
Q. 2 of Quiz- (Que-ID : 1964)
The exchange of gases in the alveoli of the lungs takes place by-
- Simple diffusion
- Osmosis
- Passive transport
- Active transport
Q. 2 of Quiz- (Que-ID : 2970)
Which among the following is not ureotelic
- Mammal
- Aquatic insect
- Terrestrial amphibian
- Marine fishes
Q. 17 of Quiz- (Que-ID : 3485)
During food chain the maximum energy is stored in
- Producers
- Decomposers
- Herbivoures
- Camivourse
Q. 1 of Quiz- (Que-ID : 3419)
Desired properties of plants and Animals are possible by which reproduction?
- Genetic Engineering
- Chromosomal Engineering
- Ekabana technology
- Bonsai technology
Q. 22 of Quiz- (Que-ID : 2635)
Enamel is originated from which cell
- Amiloblast cell
- Odontioblast cell
- Chief cell
- Peptic cell
Q. 16 of Quiz- (Que-ID : 3509)
One of the ex situ conservation methods for endangered species is
- Wild life sanctuaries
- Biosphere reserves
- Cryopreservation
- National parks
Q. 22 of Quiz- (Que-ID : 3515)
Which group of vertebrates comprises the highest number of endangered species?
- Fishes
- Reptiles
- Birds
- Mammals
Q. 22 of Quiz- (Que-ID : 3290)
An evolutionary characteristic is found in selaginella:
- Presence of ligule
- Heterophilly habits
- Sporangia present in cone
- Heterospory
Q. 20 of Quiz- (Que-ID : 3463)
Submerged hydrophytes have disseced leaves for
- Decreasing surface area
- Increasing surface area
- Reducing effect pf water currents
- Increasing number of stomata
Q. 15 of Quiz- (Que-ID : 2883)
Causes for increased population growth in india is/are
- increase in birth rate
- decrease in death rate
- lack of education
- all of these.
Q. 16 of Quiz- (Que-ID : 3459)
Habitat together with functions of a species constitute its:
- Topography
- Trophic level
- Boundary
- Ecological niche
Q. 15 of Quiz- (Que-ID : 3083)
Which one of the following statement is true for ATP?
- ATP is prosthetic part of an enzyme
- ATP is an enzyme
- ATP is organic ions of enzyme
- ATP is a Co-enzyme
Q. 12 of Quiz- (Que-ID : 3430)
Which one of the following is a step of PCR?
- Denaturation
- Annealing
- Extension
- All of these
Q. 8 of Quiz- (Que-ID : 3326)
The common cold is caused by
- Rhino viruses
- Streptococcus pnemoniae
- Salmonella typhimurium
- Plasmodium vivax.
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. 9 of Quiz- (Que-ID : 3427)
Monoclonal antibodies are obtained from
- One parent for one antigen
- Different parents for one antigen
- One parent for many antigens
- Many parents for many antigens
Q. 2 of Quiz- (Que-ID : 3145)
An example of competitive inhibition of an enzyme is the inhibition of
- succinic dehydrogenase by malonic acid
- cytochrome oxidase by cyanide
- hexokinase by glucose-6-phosphate
- carbonic anhydrase by carbon dioxide
Q. 14 of Quiz- (Que-ID : 2983)
Kidney transplantation is the ultimate method of correction in which case
- Renal calculi
- Renal failure
- Uremia
- None of the above
Q. 5 of Quiz- (Que-ID : 2873)
Which of the following STDs are not completely curable ?
- Chlamydiasis, gonorrhoea, trichomoniasis
- Chancroid syphilis, genital warts
- AIDS, syphilis, hepatitis B
- AIDS, genital herpes, hepatitis B
Q. 14 of Quiz- (Que-ID : 3532)
Bluebaby syndrome results from
- Excess of TDS
- Excess of DO
- Excess of chloride
- Methaemoglobin
Q. 4 of Quiz- (Que-ID : 3122)
Two cells A and B are contiguous. Cell A has osmotic pressure 10 atm, turgor pressure 7 atm and diffusion pressure deficit 3 atm. Cell B has osmotic pressure 8 atm, turgor pressure 3 atm and diffusion pressure deficit 5 atm. The result will be
- No movement of water
- Movement of water from cell B to A
- Movement of water from cell A to B
- Equilibrium between the two
Q. 13 of Quiz- (Que-ID : 3306)
Hardy-Weinberg equilibrium is known to be affected by gene flow, genetic drift mutation, genetic recombination and
- evolution
- limiting facrtors
- saltation
- natural selection
Q. 4 of Quiz- (Que-ID : 3272)
The seedless vascular plants whose sporophytes are larger than their small and independent gametophytes are
- Pteridophytes
- Angiosperms
- Gymnosperms
- None of these
Q. 7 of Quiz- (Que-ID : 3050)
Malacophily means
- pollination by wind
- pollination by water
- pollination by insects
- pollination by snails
Q. 9 of Quiz- (Que-ID : 3452)
One species benefit in
- Parasitism
- Predation
- Mutualism
- Both (a) and (b)
Q. 5 of Quiz- (Que-ID : 2973)
Which requires min water for removal from body
- Ammonia
- Urea
- Uric acid
- None of the above
Q. 2 of Quiz- (Que-ID : 3320)
Which one of the following disease is non – communicable ?
- Diphtheria
- Flu
- Cancer
- Malaria
Q. 14 of Quiz- (Que-ID : 2932)
To determine the genotype of a tall plant of F2 generation, Mendel crossed this plant with a dwarf plant. This cross represents a
- test cross
- back cross
- reciprocal cross
- dihybrid cross
Q. 10 of Quiz- (Que-ID : 3103)
Which one of the following mineral elements plays an in biological nitrogen fixation?
- Copper
- Manganese
- Zinc
- Molybdenum
Q. 17 of Quiz- (Que-ID : 3360)
Lean meat’ is cosidered to be of high quality because it has
- lesser but easily digestible protein
- lesser lipid content
- more fat that makes the meqt softer
- longer table life due to lesser chances of infection
Q. 8 of Quiz- (Que-ID : 3026)
The stage of rapid cell division just after fertilization is
- Organogenesis
- Cleavage
- Gastrulation
- Growth
Q. 22 of Quiz- (Que-ID : 3540)
The agents that bring undesirable changes in the environment arc called
- Pollution
- Fragments
- Pollutants
- None of the above
Q. 2 of Quiz- (Que-ID : 3145)
An example of competitive inhibition of an enzyme is the inhibition of
- succinic dehydrogenase by malonic acid
- cytochrome oxidase by cyanide
- hexokinase by glucose-6-phosphate
- carbonic anhydrase by carbon dioxide
Q. 24 of Quiz- (Que-ID : 3092)
Fixation of one CO2 molecule through Calvin cycle requires:
- 1 ATP and 2NADPH2
- 2ATP and 2NADPH2
- 3ATP and 2NADPH2
- 2ATP and 1NADPH2
Q. 12 of Quiz- (Que-ID : 3355)
Crossing of individuals of two different species to produce a hybrid is called
- interspecific hybridisation
- intervarietal hybridisation
- intergeneric hybridisation
- intravarietal hybrididisation
Q. 25 of Quiz- (Que-ID : 2638)
In which condition the faeces are retained in the rectum as the bowel movement occur irregularly
- Indigestion
- Constipation
- Diarrhoea
- None of the above
Q. 4 of Quiz- (Que-ID : 2797)
The cutaneous plexus and the papillary plexus consist of
- Specialized cells for cutaneous sensations
- A network of arteries to provide dermal supply
- A network of nerves to provide dermal sensation
- Gland cells that release cutaneous secretions
Q. 18 of Quiz- (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. 21 of Quiz- (Que-ID : 2914)
In spermatogenesis, reduction division of chromosome occurs during conversion of
- spermatogonia to primary spermatocytes
- primary spermatocytes to secondary spermatocytes
- secondary spermatocytes to spermatids
- spermatids to sperms
Q. 10 of Quiz- (Que-ID : 3353)
Which of the following is an example of a cross-breed ?
- Mule
- Hilsa
- Hisardale
- Sahiwal
Q. 3 of Quiz- (Que-ID : 3046)
The complete oxidation of pyruvate take place in
- cell cytoplasm
- inner mitochondrial membrane
- mitochondrial matrix
- nucleus
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