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4901.

Question : 5thJune is celebrated as

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World forest DAY
World ENVIRONMENT day
World red cross day
World food day

ANSWER :B
4902.

Question : {:(1.,"Waldeyar",-,(a),"Role of chromosome in heredity"),(2.,"James Watson and Crick",-,(b),"Father of genetics"),(3.,"Hugo de vries",-,(c),"Down's syndrome"),(4.,"Langdon Down",-,(d),"Chromosomes"),(5.,"T.H Morgan",-,(e),"Mutation"),(6.,"Gregor Johan Mendel",-,(f),"Model of DNA"):}

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Solution :1. chromosomes 2. Model of DNA 3. Mutation 4. Down.s syndrome 5. Role of chromosome in HEREDITY 6. Father of genetics
4903.

Question : {:(1."Off springs",-,(a)"Pollination by insects"),(2."Anemophily",-,(b)"Pollinataion by animals"),(3."Spermatogenesis",-,(c)"Blood vessels"),(4."Umbilical cord",-,(d)"Expulsion of young one"),(5."Entomophily",-,(e)"Seminiferous tubules"),(6."Parturition",-,(f)"Sexual reproduction"),(7."Zoophily",-,(g)"Pollination by wind"):}

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Solution :1. (f) Sexual reproduction 2.(G) Pollination by wind 3(e) Seminiferous tubules
4.(c) Blood vessels 5. (a) Pollination by insects 6.(d) Expulsion of young one 7.(B) Pollination by ANIMALS
4904.

Question : {:(1.,"Neuroglia",-,(a)" Conduct nerve impulses"),(2.,"Electrical impulse",-,(b)" Connects the lobe of cerebellum"),(3.,"Pons",-,(c)" Cerebrospinal fluid"),(4.,"Brain",-,(d)" Do not conduct nerve impulses"),(5.,"Dendrites",-,(e)" Information from the receptor"):}

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Solution :1. (d) Do not conduct NERVE impulses 2. (e) Information from the receptor
3. (b) Connects the lobe of CEREBELLUM 4. (c ) Cerebrospinal fluid
5. (a) Conduct nerve impulses
4905.

Question : {:(1.,"Homozygous",-,(a),"polynucleotide"),(2.,"Genes",-,(b),"human male"),(3.,"DNA",-,(c),"occurs in pairs and alike"),(4.,"Heterozygous",-,(d),"segments of DNA"),(5.,"Heterogametic",-,(e),"bind DNA to the origin of replication site"),(6.,"Autosome",-,(f),"occurs in pairs and unlike"),(7.,"Helicase",-,(g),"somatic characters"):}

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Solution :1. OCCURS in pairs and alike 2. segments of DNA 3. polynucleotide 4. occurs in pairs and unlike 5. Human male 6. somatic characters 7. BIND DNA to the ORIGIN of replication site
4906.

Question : {:(1,"Cow pea", (a),"Joining the DNA fragments"),(2,"UV rays",(b),"New breed of sheep"),(3,"Lady's finger",(c),"Bacterial blight"),(4,"DNA ligase",(d),"Flat bean"),(5,"Pusasem3",(e),"Pusa swani"),(6,"Hissardale",(f),"Induce mutation"):}

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Solution :1. (C) BACTERIAL BLIGHT 2. (f) Indece mutation 3. (e) Pusa sawani
4. (a) Joining the DNA fragments 5.(d)Flat bean
6. (B) New breed of sheep
4907.

Question : 1980: Forest Conservation Act :: 1986 :……….

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4908.

Question : …………………. undergoes continuous cell division to produce multicellular embryo

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ANSWER :ZYGOTE
4909.

Question : …………………. type of cell division reduces chromosome number to half in germ cells.

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ANSWER :MEIOSIS
4910.

Question : _____ technique made it possible to genetically engineered living organism.

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SOLUTION :RECOMBINANT DNA
4911.

Question : ________ spinal nerves are present in rabbit.

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SOLUTION :37 PAIRS of
4912.

Question : _________ separate nitrogenous waste from the blood in rabbit.

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SOLUTION :NEPHRONS
4913.

Question : …………………………….. provides diversity without any adaptation.

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ANSWER :GENETIC DRIFT
4914.

Question : ______ are converts the kinetic energy of flowing water into electricity.

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SOLUTION :HYDRO POWER
4915.

Question : …………………… plant is an efficient method of bio waste disposal.

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ANSWER :BIOGAS
4916.

Question : ________ is used to choose the block to use.

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SCRIPT area
BLOCK PALETTE
Block menu
Sprite

Solution :Block palette
4917.

Question : ............... is used in the treatment of diabetes.

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SOLUTION :INSULIN
4918.

Question : _______ is used for generation of electricity at thermal power plants.

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SOLUTION :COAL, ELECTRICITY
4919.

Question : ……………….. Is a gradual change occuring in living organisms over a long duration.

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ANSWER :EVOLUTION
4920.

Question : _____ is the first man made cereal.

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SOLUTION :TRITICALE
4921.

Question : _______ is the chemical used for doubling the chromosomes.

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SOLUTION :COLCHICINE
4922.

Question : Sprite is the background appearing when we open the scratch window.

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STAGE
Screen
Sprite
Script

SOLUTION :Stage
4923.

Question : …………………. is the causative agent responsible for sexual diseases like gonorrhea and syphilis.

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ANSWER :Bactcria
4924.

Question : …………………… is the best process to capture solar energy and convert it into biomass.

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ANSWER :PHOTOSYNTHESIS
4925.

Question : …………………………….. is called the science of heredity and variations.

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ANSWER :GENETICS
4926.

Question : _________ is an essential element used in the synthesis of proteins and other compounds.

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SOLUTION :NITROGEN
4927.

Question : …………………… is abundant in nature but availability of its special grade is limited.

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ANSWER :SILICON
4928.

Question : ______ is a reserved area for the conservation of entire wildlife including plants and animals.

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SOLUTION :NATIONAL PARK
4929.

Question : A place reserved exclusively for use of animals.

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SOLUTION :SANCTUARY
4930.

Question : ___________ is a biosphere reserve in Tamilnadu.

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SOLUTION : NILGIRIS
4931.

Question : _________ involesevporativelossof waterfromaerialparts .

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SOLUTION :TRANSPIRATION
4932.

Question : . Identify the evolutionary theory which is substantiated by the given experimental set-up.

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ANSWER :CHEMICAL EVOLUTION THEORY
4933.

Question : ....... forest of West Bengal is dominated by Sal trees

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SOLUTION :Arabari
4934.

Question : ......... community in Rajasthan has been a religious tenet for conservation of forest and wildlife.

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SOLUTION :BISHNOI
4935.

Question : {:( ,"Column A" ,,"Column B"),(1,"Sonalika",(a),"Phaseolus mungo"),(2, IR-8, (b),"Sugarcane"),(C,"Saccharum",(c),"Semi-dwarf whea"),(4,"Mung No.1",(d),"Graound nut"),(5, TMV-2,(e),"Semi-dwarf Rice"),(6,"Insulin",(f),"Bacillus thuringienesis"),(7,"Bt toxin", (g), "Beta carotene"),(8,"golden rice", (h),"first hormone produced using rDNA technique"):}

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Solution :1. (c) Semi-dwarf WHEAT 2.(E) Semi-dwarf Rice 3 (b) Sugaracane
4. (a) Phaseolus mugo 5. (d) Ground nut
6. (h) first hormone produced using rDNA technique
7. BACILLUS thuringiensis 8. (g) Beta caroten
4936.

Question : ______ characters do not produce a change in genes of germ cells and thus are not inherited.

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SOLUTION :ACQUIRED
4937.

Question :............ cells are undifferentiated mass of cells.

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SOLUTION :PLEURIPOTENT
4938.

Question : ________can be taken as the average value for the amount of organic matter present at each step that reaches the next level of consumers.

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SOLUTION :TEN PER CENT
4939.

Question : __________ can absorb uranium and arsenic.

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Sunflower
Groundnut
Ocimum
Sanctum

Answer :ALFALFA
4940.

Question : __________ brings about changes in appearance seen in boys at the time of puberty.

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SOLUTION :TESTOSTERONE
4941.

Question : __________are the physical factors like temperature, rainfall, wind, soil etc., of an ecosystem.

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SOLUTION :ABIOTIC FACTORS
4942.

Question : _____ and ____ protect the brain of mammals.

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SOLUTION :CRANIUM, MENINGES
4943.

Question : .............. and ................ plays a vital role in the working of computer.

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SOLUTION :SOFTWARE, HARDWARE
4944.

Question :............ and ................. obtained from petroleum are used as domestic fuel.

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SOLUTION :KEROSENE, LPG
4945.

Question : ________ and ___________ present in tobacco smoke is carcinogenic causing lung cancer.

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SOLUTION :BENZOPYRENE and POLYCYCLIC
4946.

Question : . Analyse the following statement and answer the questions: "Though haemophila is not completely curable, temporary relief can being in." How temporary relief can bring in ?

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ANSWER :TEMPORARY RELIEF is OBTAINED by IDENTIFYING the deficient protin and injecting it.
4947.

Question : . Analyse the following statement and answer the questions: "Though haemophila is not completely curable, temporary relief can being in." Why complete cure is not possible?

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ANSWER :It is a GENETIC DISEASE, a COMPLETE cure is not possible in present.
4948.

Question :

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Solution :`(i) (E), (II) (C), (iii) (d), (iv) (B), (V) (a)`
4949.

Question :

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Solution :1.(f) CALLUS in TISSUE culture2. (d) Gibberella Fujikuroi3.(g) Muscle spasm4. (B) Male sex hormone5. (a) Chromaffin cells6. (c) Thymus 7.(e) Female sex hormone
4950.

Question :

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Solution :1. (d)Colourless plastids2 . (c ) CHLOROPHYLL and carotenoids3. (e ) Green pigment 4.(d) Inner mitochondrial membrane5. (a) PHOTOSYSTEMS