24277 + Interview Questions in Biology in Class 12 Page 203 InterviewSolution

10101.	Question : Pond ecosystem is
Answer» not SELF SUFFICIENT and self regulating partially self sufficient and self regulating self sufficient and not self regulating self sufficient and self regulating Answer :A::C::D

Discussion

10102.	Question : Pomato is the result of
Answer» Autopolyploidy Genetic mutation Protoplast fusion Inter varietal hybridsation Answer :C

Discussion

10103.	Question : Pomato is somatic hybrid between
Answer» POTATO and tomato tomato and POPPY poppy and potato poppy and tamarind Answer :A

Discussion

10104.	Question : Pomato is an intergenericsomatic hybrid of
Answer» POTATO and BRINJAL Potato and Tomato Tomato and Brinjal Potato and Tabacco Answer :B

Discussion

10105.	Question : Polytene chromosomes in salivery glands of Drosohila are formed as a result o f:
Answer» Replacation of DNA WITHOUT SEPERATION Suplication without separaation endouplation all of the above Answer :D

Discussion

10106.	Question : polytene chromomosmes were discoveredby Balbiani (1881) fromsalivery glands of larva of :
Answer» Silk woen Lac INSECT DROSOPHILA Chironomymus Answer :D

Discussion

10107.	Question : Polytene chromosomes are also known as
Answer» neoteny polytenisation chromoteny haploidy Answer :B

Discussion

10108.	Question : Polytene chromosome was first reported by
Answer» EG balbiani Emil Heitz Han bauer Both (B) and (C) ANSWER :A

Discussion

10109.	Question : Polytene chromosome was discovered in
Answer» Chironomus Drosophila musca Culex Answer :A

Discussion

10110.	Question : 'Polyspermy' is avoided by
Answer» CORTICAL reqactions Zona reactions inhibin hormone both (1) & (2) ANSWER :D

Discussion

10111.	Question : Polysome is formed by:
Answer» A RIBOSOME with several subunits RIBOSOMES attached to each other in a LINEAR arrangement Several ribosome attached to a single m-RNA Many ribosomes attached to a strand of endoplasmic reticulum Answer :C

Discussion

10112.	Question : Polyploidy leads to rapid formation of new species because of
Answer» isolation Development of MULTIPLE SETS of chromosomes Mutation genetic RECOMBINATION ANSWER :B

Discussion

10113.	Question : Polymorphism is due to
Answer» Monogenic INHERITANCE polygenicinheritance Both (a) and (B) NONE of these ANSWER :C

Discussion

10114.	Question : Polymerase Chain Reaction is the synthesis of multiple copies of gene of interest in vitro using two sets of primers and DNA polymerase enzyme. Commonly used DNA polymerase for PCR reaction is Taq polymerase. Write the significance of Taq polymease enzyme.
Answer» Solution :Taq polymerase is a thermostable DNA polymerase enzyme isolated from bacterium-Thermus aquaticus, which REMAINS ACTIVE during high TEMPERATURE and induced denaturation of singl stranded DNA. Taq polymerase synthesises the DNA strands complementary to the DNA template srand, i.e., primer extension.

Discussion

10115.	Question : Polymeric polysaccharide consisting of only one type of monosaccharide is :-
Answer» Glycogen Cellulose Inulin All of the above Answer :D

Discussion

10116.	Question : Polymorphic cell organelle is:
Answer» Glyoxysome Lysosome Golgi complex Peroxisome Answer :A

Discussion

10117.	Question : Polymerase chain reaction is useful in
Answer» DNA synthesis DNA amplification Protein synthesis Amino ACID synthesis Answer :B

Discussion

10118.	Question : Polygonum type of embryosac is
Answer» 8-celled 4- celled 5-celled 7-celled Answer :D

Discussion

10119.	Question : Polymerase chain reaction is most useful in :
Answer» DNA synthesis DNA AMPLIFICATION PROTEIN synthesis Amino ACID synthesis Answer :B

Discussion

10120.	Question : Polygonum type of embryo sac is :
Answer» 8-nucleate 16-nucleate 24-nucleate 32-nucleate Answer :A

Discussion

10121.	Question : Identify the wrong statement from the below
Answer» Mendel's monohybrid ratio is `9 : 3 : 3:1` Reciprocal differences found in MIRABILIS jalapa. RF genes are required to restore FERTILITY in pearl maize. Test CROSS determines the genotype of an individual. Answer :A

Discussion

10122.	Question : Identify the wrong statement from the below about ''cytoplasmic inheritance''
Answer» CHLOROPLAST acts as inheritance vertor. Mitochondrion acts as inheritance vector. Normal CYTOPLASM is MALE fertile. Aberrant cytoplasm is female fertile. Answer :D

Discussion

10123.	Question : Polyethylene glycol method is used for
Answer» Energy production from SEWAGE GENE transfer without a vector Biodiesel production SEEDLESS fruit production Answer :B

Discussion

10124.	Question : Polyembryony was first observed in ?
Answer» Mangifera Cucurbita Citrus (ORANGE) Euphorbia Answer :C

Discussion

10125.	Question : Which of the following indicates the development of ovary into fruits without the stimulation of fertilization ?(A) Incompatibility(B) Parthenogenesis(C) Polyembryony(D) Parthenocarpy
Answer» Solution :OCCURRENCE of more than one EMBRYO in a SEED is REFERRED to as polyembryony

Discussion

10126.	Question : Polydipsia and polyuria are the symptoms of deficiency of …………. .
Answer» STH ADH MSH FSH Answer :B

Discussion

10127.	Question : Polydactyly in man is due to
Answer» AUTOSOMAL RECESSIVE allele Autosomal DOMINANT allele Sex LINKED recessive allele Sex linked dominant allele Answer :B

Discussion

10128.	Question :Polyblend is
Answer» a mixture of two different types of plastics a fine powder of recycled modified plastic a BLEND of plastic and bitumen none of these Solution :AHMED Khan, a plastic sack manufacturer of Bangalore in 1998, developed polyblend, a fine powder of recycled modified plastic in COLLABORATION with R.V. College of Engineering and Bangalore CITY Corporation. He proved that the mixture of polyblend and bitumen was better for road carpeting as it has better water repellent was better for road carpeting as it had better water repellent property. It increased road life by a factor of three.

Discussion

10129.	Question : Polycistronic mesenger RNA (mRNA) usually occurs in
Answer» bacteria prokaryotes eukaryotes both a and b Solution :(d) : When a particular GENE codes for a mRAN strand it is SAID to be monocistronic or monogenic. When several genes (CISTRONS) are transcribed into a single mRNA molecule, it is DESCRIBED aspolycistronic or polygenic. Prokaryotic mRNAare POLYCISTRONIC.

Discussion

10130.	Question : Polyblend, a fine powder of recycled modified plastic, has proved to be a good material for :(A) making plastic sacks(B) use as a fertilizer(C) construction of roads(D) making tubes and pipes
Answer» MAKING PLASTIC sacks use as a fertilizer construction of roads making TUBES and pipes Answer :C

Discussion

10131.	Question : Polyarch conditions is found in
Answer» monocot root dicot root monocot stem dicot stem Solution :DEPENDING UPON the NUMBER of protoxylem elements, the roots are monarch (having single protoxylem group), diarch, triarch, tetrach, pentarch, hexarch and polyarch. The dicot roots show mono to hexarch condition, whereas the monocot roots are hexa to polyarch. When the protoxylem elements LIE towards the centre and metaxylem at the periphery, the condition is said to be ENDARCH, e.g. stem.

Discussion

10132.	Question : Pollution of SO_2 destroys:
Answer» Lichen Fungi Algae Fishes Answer :A

Discussion

10133.	Question : Polyarch condition is found in
Answer» MONOCOT root Dicot root Monocot stem Dicot stem Answer :A

Discussion

10134.	Question : Polyadelphous stamens occur in
Answer» Lemon Gram Sunflower Cotton Answer :A

Discussion

10135.	Question : Pollution of water is caused by :
Answer» INDUSTRIAL effluents Sewage Farm runoff All of these Answer :D

Discussion

10136.	Question : Pollution is a/an …Unwanted change in biotic factors.Change in Ecosystem.Unwanted change in abiotic factors.Unwanted change in human.
Answer» Unwanted CHANGE in BIOTIC factors. Change in Ecosystem. Unwanted change in abiotic factors. Unwanted change in HUMAN. Answer :C

Discussion

10137.	Question : Pollution caused by human activities activities is called Arthoropodic pollution.
Answer» ANSWER :A::C

Discussion

10138.	Question : Pollution from animal excreta and organic waste from kitchen can be most profitably minimized by :
Answer» STORING them in undeground STORAGE tanks using them for producing BIOGAS vermiculture using them directly as bilfertilizers Answer :B

Discussion

10139.	Question : Pollution.
Answer» Solution :POLLUTION is the PRESENCE in or introduction into the encironment of a SUBSTANCE or THING that has harmful or posonous EFFECTS.

Discussion

10140.	Question : Pollutants from man's activitieslikeeffluents fromthe industriesand homesacceleratethe agingprocess of lakes a) Name the phenomenonb)Write any four harmfuleffectsof thisprocess.
Answer» Solution :a) culturalor acceleratedeutrophication B) 1)over STIMULATE the growthof ALGAE 2)cause unpleasantador depletesdissolved OXYGEN 4) Deathof fish

Discussion

10141.	Question : Pollutants from man's activities like effluents from the industries and homes can accelerate the aging process. This phenomenon has been called :(A) Biochemical oxygen demand(B) Cultural or Accelerated biological magnification(C) Cultural or Accelerated eutrophication(D) Biochemical eutrophication
Answer» Biochemical oxygen demand Cultural or Accelerated BIOLOGICAL magnification Cultural or Accelerated EUTROPHICATION Biochemical eutrophication ANSWER :C

Discussion

10142.	Question : Pollutants discharged by jet planes are :
Answer» Smoke Fog Smog Aerosols Answer :D

Discussion

10143.	Question : Pollutant that reduce O_2 carrying capactiy of blood is:
Answer» `SO_2` `CO_2` CO `NO_X` ANSWER :C

Discussion

10144.	Question : Pollutant freeMetropolitan cities can beraised by the use of CNG.a)Exapand CNG? b) what are the advantages of CNG?
Answer» Solution :a)CNG is compressednatural gas <B>b)1. CNG is BETTER thandiesel 2. Itsburnsmost effciently 3. CNG is cheaperthanpetrolor DIESEL 4. It can notbeadulteratedlike petrolor diesel .

Discussion

10145.	Question : Pollinia are sac like structures
Answer» Which secerete YELLOW substance Which are found in megasporangia In which anther LOBES are present In which POLLEN grains are present in mass Answer :D

Discussion

10146.	Question : Pollination which can occur in same plant is favoured by(A) herkogamy(B) cleistogamy(C) dichogamy(D) dicliny
Answer» hekrogamy cleistogamy dichogamy dicliny Answer :B

Discussion

10147.	Question :Pollination takes place by insect is _____ .
Answer» ANEMOPHILY ENTOMOPHILY Ornithophily hydrophily ANSWER :B

Discussion

10148.	Question : Pollination is aided by biotic and abiotic agents. Identify the type of pollination in Vallisneria, coconut and grass.
Answer» Solution :VALLISNARIA - Water POLLINATION Coconut and GRASS - Wind pollination

Discussion

10149.	Question : Pollination is best defined as(A) The transference of pollens from anthers to stigma(B) The germination of pollen grains(C) visiting on flowers by ants(D) the growth of pollen tube in the ovule
Answer» The TRANSFERENCE of pollens from ANTHERS to stigma The GERMINATION of POLLEN grains visiting on flowers by ants the growth of pollen tube in the ovule Answer :A

Discussion

10150.	Question : Pollination in Rafflesia is occurred by
Answer» Carion flies elephant bat crow Answer :A

Discussion

Explore topic-wise InterviewSolutions in .

Question : Pond ecosystem is

Question : Pomato is the result of

Question : Pomato is somatic hybrid between

Question : Pomato is an intergenericsomatic hybrid of

Question : Polytene chromosomes in salivery glands of Drosohila are formed as a result o f:

Question : polytene chromomosmes were discoveredby Balbiani (1881) fromsalivery glands of larva of :

Question : Polytene chromosomes are also known as

Question : Polytene chromosome was first reported by

Question : Polytene chromosome was discovered in

Question : 'Polyspermy' is avoided by

Question : Polysome is formed by:

Question : Polyploidy leads to rapid formation of new species because of

Question : Polymorphism is due to

Question : Polymerase Chain Reaction is the synthesis of multiple copies of gene of interest in vitro using two sets of primers and DNA polymerase enzyme. Commonly used DNA polymerase for PCR reaction is Taq polymerase. Write the significance of Taq polymease enzyme.

Question : Polymeric polysaccharide consisting of only one type of monosaccharide is :-

Question : Polymorphic cell organelle is:

Question : Polymerase chain reaction is useful in

Question : Polygonum type of embryosac is

Question : Polymerase chain reaction is most useful in :

Question : Polygonum type of embryo sac is :

Question : Identify the wrong statement from the below

Question : Identify the wrong statement from the below about ''cytoplasmic inheritance''

Question : Polyethylene glycol method is used for

Question : Polyembryony was first observed in ?

Question : Which of the following indicates the development of ovary into fruits without the stimulation of fertilization ?(A) Incompatibility(B) Parthenogenesis(C) Polyembryony(D) Parthenocarpy

Question : Polydipsia and polyuria are the symptoms of deficiency of …………. .

Question : Polydactyly in man is due to

Question :Polyblend is

Question : Polycistronic mesenger RNA (mRNA) usually occurs in

Question : Polyblend, a fine powder of recycled modified plastic, has proved to be a good material for :(A) making plastic sacks(B) use as a fertilizer(C) construction of roads(D) making tubes and pipes

Question : Polyarch conditions is found in

Question : Pollution of SO_2 destroys:

Question : Polyarch condition is found in

Question : Polyadelphous stamens occur in

Question : Pollution of water is caused by :

Question : Pollution is a/an …Unwanted change in biotic factors.Change in Ecosystem.Unwanted change in abiotic factors.Unwanted change in human.

Question : Pollution caused by human activities activities is called Arthoropodic pollution.

Question : Pollution from animal excreta and organic waste from kitchen can be most profitably minimized by :

Question : Pollution.

Question : Pollutants from man's activitieslikeeffluents fromthe industriesand homesacceleratethe agingprocess of lakes a) Name the phenomenonb)Write any four harmfuleffectsof thisprocess.

Question : Pollutants discharged by jet planes are :

Question : Pollutant that reduce O_2 carrying capactiy of blood is:

Question : Pollutant freeMetropolitan cities can beraised by the use of CNG.a)Exapand CNG? b) what are the advantages of CNG?

Question : Pollinia are sac like structures

Question : Pollination which can occur in same plant is favoured by(A) herkogamy(B) cleistogamy(C) dichogamy(D) dicliny

Question :Pollination takes place by insect is _____ .

Question : Pollination is aided by biotic and abiotic agents. Identify the type of pollination in Vallisneria, coconut and grass.

Question : Pollination is best defined as(A) The transference of pollens from anthers to stigma(B) The germination of pollen grains(C) visiting on flowers by ants(D) the growth of pollen tube in the ovule

Question : Pollination in Rafflesia is occurred by