24277 + Interview Questions in Biology in Class 12 Page 410 InterviewSolution

20451.	Question : Biosynthetic phase of photosynthesis
Answer» INVOLVES use of ATP and NADPH to FORM food Continues for long TIME if LIGHT is unavailable Occurs in thylakoids only Depends on light directly Answer :A

Discussion

20452.	Question : Biosphere reserves differ from national parks and wild life sanctuaries because in the former
Answer» human being are not ALLOWED to enter people are an integral PART of the system plants are paid GREATER ATTENTION than the animals living Organisms are brought from all over the WORLD and preserved for posterity. Answer :B

Discussion

20453.	Question : Biosphere is
Answer» a component in the ecosystem composed of the plants present in the soil life in the OUTER space composed of all LIVING organisms present on earth which INTERACT with the physical ENVIRONMENT Solution :Biosphere is made up of all living organisms present on earth which interact with its physical environment. It is the sum total of all the ECOSYSTEMS of the world.

Discussion

20454.	Question :Biosphere reserves are areas comprising :
Answer» TERRESTRIAL ECOSYSTEMS Marine ecosystems COASTAL ecosystems Any of these Answer :D

Discussion

20455.	Question : Biospecies which are difficult to separate on the basis of morphological traits are
Answer» Linneons Allopatric Species Sibling species Neontological Species. Answer :A

Discussion

20456.	Question : What is Bioremediation ?
Answer» Solution :Aerobic microbes degrade the pollutants in the presence of oxygen . They mainly degrade pesticides and hydrocarbons Pseudomonas putida is a genetically engineered microorganism (GEM) Ananda Mohan Chakrabarty obtained patentfor this recombinant bacterialstrain It is multiplasmid hydrocarbon DEGRADING bacterium which can digest the hydrocarbonsin the oil spills . NITROSOMONAS europaea is also capable of degrading BENZENE benzene and a variety of halogenated organic compounds includinf trichloroethylene and vinyl chloride Ideonella sakaiensis is currently tried for recycling of PET plastics These bacteria use PET Tase and MHETase enzymes to breakdown PET plastic into terephthalic acid and ethylene GLYCOL. Anerobic microbes degrade the pollutants in the absence of oxygen . Dechloromonas aromatica has the ability to degrade benzene anarobically and to oxidize toluene and xylene. Phanerochaete chrysosporium an anaerobic fungus exhibits strong potential for bioremediation of pesticides polyaromatic hydrocarbons dyes trinitrotoluene cyanides CARBON tetrachloride, etc., Dehalococcoides species are responsible for anaerobic bioremediation of toxic trichloroethene to nontoxic ethane Pestalotiopsis microspora is a species of endophytic fungus capable of breaking down and digesting polyurethane This makes the fungus a potential candidate for bioremediation projects involving large quantities of plastics.

Discussion

20457.	Question : Discuss the Biopiracy
Answer» USE of biopatents thefts of PLANTS and animals stealing of BIORESOURCES exploitation of bioresources WITHOUT AUTHENTIC permission Answer :D

Discussion

20458.	Question : Biopiracy is(A) Exploitation of bio-resources(B) Patenting bio-resources of others(C) Use of bio-resources without authorization(D) Both (B) and (C)
Answer» USE of BIOPATENTS Thefts of plants and ANIMALS STEALING of bioresources EXPLOITATION of bioresources without authentic permission Solution :Exploitation of bioresources without authentic permission

Discussion

20459.	Question : Biopiracy is related to which of the following ?
Answer» TRADITIONAL knowledge Biomolecules and REGARDING bioresources Bioresources All of the above Answer :C

Discussion

20460.	Question : Biopiracy affects developing countries like India more than industrialised nations, because our country is rich in ............ and ............. related to bio-resources. (Bioetics / Biodiversity / Biopatent, Traditional resources/Traditional cultivation/Traditional knowledge)
Answer» SOLUTION :BIODIVERSITY and TRADITIONAL KNOWLEDGE

Discussion

20461.	Question :Biopatents are (i) Right to use invention (ii) Right to use biological entities (iii) Right to use products (iv) Right to use Process(A) (i) and (ii)(B) (ii) only(C) (i), (ii) and (iv)(D) All of these
Answer» (i) and (II) (ii) only (i), (ii) and (IV) All of these SOLUTION :All of these

Discussion

20462.	Question : Biopatentsareusually awarded for thediscoveryof
Answer» NEW CELL lines newDNAsequences GM STRAINS All ofthese Answer :D

Discussion

20463.	Question : Biopatents are (i) right to use invention (ii) right to use biological entities (iii) right to use products (iv) right to use process.
Answer» (i) and (II) (ii) only (i),(ii) and (IV) (i),(ii),(III) and (iv) ANSWER :D

Discussion

20464.	Question : Biopesticides are:
Answer» The CHEMICAL which are used to DESTROY the pests The living organisms or their PRODUCTS which are useful for the pest control The organism which destroy the crops None of the above Answer :B

Discussion

20465.	Question : Biopatent - The patents granted for biological entities and processes. _____ - The unauthorized use of bioresources by multinational companies without compensatory payment.
Answer» SOLUTION :BIOPIRACY

Discussion

20466.	Question : Biome distribution with respect to annual temperature and precipitation is given below. Identify grassland and coniferous forest by selecting the correct option:
Answer» A and B B and E B and D C and D Answer :B

Discussion

20467.	Question : Biomes distribution corresponds roughly with regional variations in
Answer» CLIMATE TOPOGRAPHY SOILS All of these SOLUTION :All of these

Discussion

20468.	Question : Biome is specific place in the habitat occupied by a species.
Answer» ANSWER :ECOLOGICAL NICHE

Discussion

20469.	Question : Biomass available for consumption of herbivores and decomposers is called as
Answer» Secondary productivity STANDING CROP Gross primary productivity SA NET primary productivity SOLUTION :Net primary productivity

Discussion

20470.	Question : Biomagnification refers to :
Answer» RAPID GROWTH of algae Rapid growth of POPULATION Decrease in population size Increase in concentration of non-degradable pollutants as they PASS through a FOOD chain Answer :D

Discussion

20471.	Question : Biomagnification is _____a)Growth of organism due to food productionb)Increase in populations sizec)Increase in concentration of non-biodegradable Pollutant as they pass through food chaind)Decrease in popualation size
Answer» GROWTH of ORGANISM due to FOOD production Increase in populations size Increase in CONCENTRATION of non-biodegradable Pollutant as they pass through food chain Decrease in popualation size Answer :C

Discussion

20472.	Question : Biologists believe that the current DNAtoRNAtoProtein system is the result of a long period evolution because
Answer» DNA Replication is complicated but relatively ERROR free and the CURRENT systemis very complexand precise The TRANSCRIPTION of DNA to mRNA and transaltion of mRNA into proteins CONSISTS of many STEPS Evidence indicates that RNA preceded DNA as the genetic material All of the above Answer :D

Discussion

20473.	Question : Biologists are interested in the role of liposomes in the origin of life. They think that liposomes might show how the
Answer» Raw MATERIALS for organic compounds are formed Formation of organic POLYMERS, such as carbohydrates and RNA were catalysed primitive cell MEMBRANES have FORM,grow and divide energy was supplied for the metabolisro of the FIRST simple cells Answer :C

Discussion

20474.	Question : Biologist who has been called the Darwin of the 20th century was
Answer» Linnaeus Ernst MAYR Diener Whittaker ANSWER :B

Discussion

20475.	Question : Biologicalweaponsconventionandtreatygiven in
Answer» 1972 1942 1932 1955 Answer :A

Discussion

20476.	Question : Biological rhythms that are repeated once every 24 hours are
Answer» Circannual RHYTHMS Circadian rhythms LUNAR periodicity 1 and 2 Answer :B

Discussion

20477.	Question : Biological organism demand (BOD) is a parameter used to measure the amount of organic matter present in waste water.
Answer» True False Answer :BIOCHEMICAL OXYGEN DEMAND

Discussion

20478.	Question : Biological process is carried out in which type of water treatment :
Answer» Primary Secondary Tertiary Both (1) & (2) ANSWER :B

Discussion

20479.	Question : Biological equilibrium is found among which of the following ?
Answer» PRODUCERS and CONSUMERS Producer and decomposers Producers and consumers and decomposers Producers and LIGHT ANSWER :C

Discussion

20480.	Question : Biological diversity day is
Answer» 5 TH june 21st march 14th january 29th december Answer :D

Discussion

20481.	Question : Biological control component is central to advanced agricultural production. Which of the following is used as a third generation pesticide ?
Answer» INSECT HORMONE analogues Insect repellants Pheromones Pathogens Answer :A

Discussion

20482.	Question : Biological concept of species is given by :-
Answer» ARISTOTLE BENTHAM KOCH Mayr Answer :A

Discussion

20483.	Question :Biological concept of species is mainly based on
Answer» REPRODUCTIVE ISOLATION Morphological FEATURES only METHODS of reproduction only Morphology and methods of reproduction Solution :Reproductive isolation

Discussion

20484.	Question : Biolistics (gene-gun) is suitable for
Answer» Disarming pathogen VECTORS Transformation of plant cells CONSTRUCTING recombinant DNA by joining with vectors DNA FINGER PRINTING Solution :Constructing recombinant DNA by joining with vectors

Discussion

20485.	Question : Biolistics are suitable for
Answer» Constructing recombinant DNA by joining with vectors DNA FINGER printing Disarming pathogen vectors TRANSFORMATION of PLANT cells SOLUTION :Transformation of plant cells

Discussion

20486.	Question : Biogeochemical cycle comprises both gaseous cycle and sedimentary cycle. How they differ from one another?
Answer» Solution :The COMPONENTS of gaseous cycle are placed in ATMOSPHERE E.g: Oxygen in AIR, WHEREAS in sedimentary cycle, the components are present in/on Earth. E.g: PHOSPHOROUS in rocks.

Discussion

20487.	Question : Biogenetie law is not universal - justify.
Answer» SOLUTION :The BIOGENETIC law is not universal and it is now THOUGHT that animals do not recapitulate the adult stage of any ANCESTORS. The human EMBRYO recapitulates the embryonic history and not the adult history of the organisms.

Discussion

20488.	Question : Biogenetic law is also called:
Answer» Biogenesis Abiogenesis Theory of recapitulation None of these Answer :C

Discussion

20489.	Question : Biogenetic law as given by Haeckel states that
Answer» ONTOGENY RECAPITULATES PHYLOGENY phylogeny recapitulates ontogeny ontogeny and phylogeny GO together there is no RELATIONSHIP between phylogeny and ontogeny Answer :A

Discussion

20490.	Question : Biogenesis
Answer» SOLUTION :It is the ORIGIN of LIFE from pre-existing life.

Discussion

20491.	Question : Biogas is pathogen free because
Answer» anaerobic DIGESTION removes PATHOGENS and bacteria it is toxic to pathogens during DECOMPOSITION, it produces antibiotics cattle DUNG is PATHOGEN free Answer :C

Discussion

20492.	Question : Biogas production from waste biomass with the of methanogenic bacteria is
Answer» MULTI STEP process one step process two step process three step process Answer :A

Discussion

20493.	Question : Biogas produced by anaerobic decomposition used in combustion is mainly due to presence of:
Answer» `H_2` `CH_4` `H_2S` NONE of these Answer :B

Discussion

20494.	Question : Biogas plant is commonly found in rural areas, Why ?
Answer» SOLUTION :Cattle dung is available in LARGE quantities in rual AREAS, where cattle are used for a VARIETY of purposes.

Discussion

20495.	Question : Biogas includes all of the following, except
Answer» `CH_4` `CO_2` `H_2` CO Answer :D

Discussion

20496.	Question :Biodiversity must be conserved as it plays an important role in many ecosystem services that nature provides. Explain any two services of the ecosystem.
Answer» Solution :The two ECOSYSTEMS service are- (i) FOREST ecosystem purify air, mitigate droughts and floods. (ii) The Cycling of nutrients generates FERTILE SOIL and MAINTAINS biodiversity.

Discussion

20497.	Question : Biofertilizers give better yield when added along with
Answer» phosphate calciumurea Answer :A

Discussion

20498.	Question : Biofertilizer means……
Answer» COW dung and agricultural waste s a crop showing FAST GROWTH anabena and nostoc SOLUTION :anabena and nostoc

Discussion

20499.	Question : Biofertilisers are organisms that enrich the nutrient quality of the soil. Which one is not a source of biofertilisers?
Answer» BGA fungi lichen Bacteria Answer :C

Discussion

20500.	Question : Biodiversity plays a major role in providing many ecosystem services. Explain.
Answer» Solution :The products of ecosystem processes are NAMED as ecosystem services, such as Healthy FOREST ecosystems purify air and water, mitigate droughts and FLOODS, cycle nutrients, generate fertile soils, provide wild LIFE habitat, maintain biodiversity, pollinate crops, provide storage site for CARBON and also provide aesthetic, cultural and spiritual values.

Discussion

Explore topic-wise InterviewSolutions in .

Question : Biosynthetic phase of photosynthesis

Question : Biosphere reserves differ from national parks and wild life sanctuaries because in the former

Question : Biosphere is

Question :Biosphere reserves are areas comprising :

Question : Biospecies which are difficult to separate on the basis of morphological traits are

Question : What is Bioremediation ?

Question : Discuss the Biopiracy

Question : Biopiracy is(A) Exploitation of bio-resources(B) Patenting bio-resources of others(C) Use of bio-resources without authorization(D) Both (B) and (C)

Question : Biopiracy is related to which of the following ?

Question : Biopiracy affects developing countries like India more than industrialised nations, because our country is rich in ............ and ............. related to bio-resources. (Bioetics / Biodiversity / Biopatent, Traditional resources/Traditional cultivation/Traditional knowledge)

Question :Biopatents are (i) Right to use invention (ii) Right to use biological entities (iii) Right to use products (iv) Right to use Process(A) (i) and (ii)(B) (ii) only(C) (i), (ii) and (iv)(D) All of these

Question : Biopatentsareusually awarded for thediscoveryof

Question : Biopatents are (i) right to use invention (ii) right to use biological entities (iii) right to use products (iv) right to use process.

Question : Biopesticides are:

Question : Biopatent - The patents granted for biological entities and processes. _____ - The unauthorized use of bioresources by multinational companies without compensatory payment.

Question : Biome distribution with respect to annual temperature and precipitation is given below. Identify grassland and coniferous forest by selecting the correct option:

Question : Biomes distribution corresponds roughly with regional variations in

Question : Biome is specific place in the habitat occupied by a species.

Question : Biomass available for consumption of herbivores and decomposers is called as

Question : Biomagnification refers to :

Question : Biomagnification is _____a)Growth of organism due to food productionb)Increase in populations sizec)Increase in concentration of non-biodegradable Pollutant as they pass through food chaind)Decrease in popualation size

Question : Biologists believe that the current DNAtoRNAtoProtein system is the result of a long period evolution because

Question : Biologists are interested in the role of liposomes in the origin of life. They think that liposomes might show how the

Question : Biologist who has been called the Darwin of the 20th century was

Question : Biologicalweaponsconventionandtreatygiven in

Question : Biological rhythms that are repeated once every 24 hours are

Question : Biological organism demand (BOD) is a parameter used to measure the amount of organic matter present in waste water.

Question : Biological process is carried out in which type of water treatment :

Question : Biological equilibrium is found among which of the following ?

Question : Biological diversity day is

Question : Biological control component is central to advanced agricultural production. Which of the following is used as a third generation pesticide ?

Question : Biological concept of species is given by :-

Question :Biological concept of species is mainly based on

Question : Biolistics (gene-gun) is suitable for

Question : Biolistics are suitable for

Question : Biogeochemical cycle comprises both gaseous cycle and sedimentary cycle. How they differ from one another?

Question : Biogenetie law is not universal - justify.

Question : Biogenetic law is also called:

Question : Biogenetic law as given by Haeckel states that

Question : Biogenesis

Question : Biogas is pathogen free because

Question : Biogas production from waste biomass with the of methanogenic bacteria is

Question : Biogas produced by anaerobic decomposition used in combustion is mainly due to presence of:

Question : Biogas plant is commonly found in rural areas, Why ?

Question : Biogas includes all of the following, except

Question :Biodiversity must be conserved as it plays an important role in many ecosystem services that nature provides. Explain any two services of the ecosystem.

Question : Biofertilizers give better yield when added along with

Question : Biofertilizer means……

Question : Biofertilisers are organisms that enrich the nutrient quality of the soil. Which one is not a source of biofertilisers?

Question : Biodiversity plays a major role in providing many ecosystem services. Explain.