24277 + Interview Questions in Biology in Class 12 Page 102 InterviewSolution

5051.	Question : The presence of diversity at the junction of territories of two different habitats is known as:
Answer» BOTTLE NECK EFFECT edge junction effect pasteur effect Answer :B

Discussion

5052.	Question : The presence of arginase confirms that
Answer» ARGININE is synthesised AMMONIA is formed Arginine is being CONVERTED into ornithine Arginine is being converted into CITRULLINE Answer :C

Discussion

5053.	Question : The presence and position of which one of the following defines the template and coding strands in a transcription unit?
Answer» REPRESENT operator Structure gene Promotor ANSWER :D

Discussion

5054.	Question : The prescnce of arginase confirms that the
Answer» UREA CYCLE is operating urea cycle MAY be operating arginine is being CONVERTED into ornithine arginine is being converted into citrulline Answer :C

Discussion

5055.	Question : The pregnancy test is based on detection of which hormone ?
Answer» Progesterone Estrogen HCG LH Answer :C

Discussion

5056.	Question : The preparation oand flavoruing of leaves of tea and tobacco is due to the activities of
Answer» STREPTOCOCCUS lactis Bacillus SUBTIL megatherium bacter Bacillus radicola Answer :B

Discussion

5057.	Question : The predominant-site for control of gene expression in prokaryotes is
Answer» Regulated through AUTOCATALYTIC FUNCTION of gene Regulated at TRANSLATION level Controlled by Snurps activity Control of the rate of transcriptional initiation Answer :D

Discussion

5058.	Question : The prebiotic atmosphere of the earth was of a reducing nature. It was transformed into an oxidizing atmosphere of present day due to the emergence of
Answer» cyanobacteria angiosperms PHOTOSYNTHETIC bacteria eukaryotic ALGAE ANSWER :A

Discussion

5059.	Question : The practice of maintenance of honeybees for the production is called …........
Answer» ANSWER :Bee-keeping

Discussion

5060.	Question : The power of young birds to return to the original grounds of parents is
Answer» INTELLIGENCE and intuition False conception Instinct only Intuition and instinct Answer :C

Discussion

5061.	Question : The practical purpose of classification of living organisms is to
Answer» FACILITATE identification of UNKNOWN organisms explain the origin of LIVING organisms. trace the EVOLUTION of living organisms NAME the living organisms Answer :A

Discussion

5062.	Question : The powder developed by Mr. Ahmad Khan from plastic.
Answer» SOLUTION :POLY BLEND

Discussion

5063.	Question : The posterior pituitary.
Answer» PRODUCES oxytocin Is under the CONTROL of HYPOTHALAMIC RELEASING neurohormone Secretes TROPHIC hormons Secretes neurohrmones Answer :A

Discussion

5064.	Question : The posterior pituitary is under the
Answer» DIRECT neural REGULATION of the adenohypophysis direct neural regulation of the hypothalamus direct AXONAL regualtion of the adenohypophysis direct axonal regulation of the neurohypophysis Answer :B

Discussion

5065.	Question : The possible beneficial effect of grazing animals is the
Answer» ERADICATION of weeds REMOVAL of wild PLANTS Removal of wild animals ADDITION of their EXCRETA in the soil Solution :Addition of their excreta in the soil

Discussion

5066.	Question : Fill up the blanks after reading the statement. Post-fertilization events in angiosperms. Zygote : Embryo Ovule : _____ Ovary : _____
Answer» SOLUTION :OVULE : SEED OVARY : FRUIT

Discussion

5067.	Question : The possibilities of hereditary and evolutionary changes are greatest in species which are reproduced by:
Answer» Fission Budding Asexual means Sexual means Answer :D

Discussion

5068.	Question : The population size in nature could be as lt10 for
Answer» Chlamydomonas in a pond SIBERIAN cranes at BHARATPUR wetlands in any year CORMORANTS in a wetland All of the above Solution :The size in nature could be low as `lt` 10 (Siberian cranes at Bharatpur Wetland in any year) or go in to millions (Chlamydomonas in a pond).

Discussion

5069.	Question : The population size in more technically called
Answer» POPULATION GRADIENT population CENSUS population pressure population DENSITY ANSWER :D

Discussion

5070.	Question : The population of an insect species shows explosives increase in numbers during rainy season followed by its disappearance at the end of the season. What does this shows ?
Answer» The food plants mature and die at the end of the RAINY season. Its POPULATION GROWTH curve is of J-type The population of its predator INCREASES enormously S-Shapead or sigmoid growth of this insect. Answer :B

Discussion

5071.	Question : The population of grey coloured Biston betularia, were almost replaced by the black variety during the industrial revolution in England. Explain the mechanism involved.
Answer» SOLUTION :INDUSTRIAL MELANISM

Discussion

5072.	Question : the population of an insect species shows and explosive increase in number during rainy season followed by its disappearance at the end of the season. what does the show?
Answer» a population of its predators increases enormously. S-shaped or sigmoid growth of this insect. the food PLANTS mature and DIE at the END of the rainy season. its population growth CURVE is of J-type Answer :D

Discussion

5073.	Question : The population of an insect species shows an explosive increase in numbers during rainy season followed by its disappearance at the end of the season. What does this show?
Answer» The population of its predators INCREASES enormously S-shaped or sigmoid growth of this INSECT The food plants MATURE and die at the end of the RAINY season Its population growth curve is of J-type Answer :D

Discussion

5074.	Question : The population of an insect species shows an explosive increase in number during rainy season followed by its disapperance at the end of the season.What does this show?
Answer» S-shaped or sigmoid growth of this insect The food plants mature and DIE at the END of the rainy season Its POPULATION growth curve is of J type The population of its PREDATORS increases enormously Answer :C

Discussion

5075.	Question : The poplution dynamics of a species is basically regulated by :
Answer» climate food supply competition WITHIN and between species all of the above Solution :N/A

Discussion

5076.	Question : Population of an insect species increases explusively during rainy season and then disappears at the end of the season . It shows :
Answer» The food plants MATURE and DIE at the end of the RAINY season Its population growth curve is of J-type The population of its predators increases enormously S-shaped or sigmoid growth of this insect Answer :B

Discussion

5077.	Question : The population limited to a particular geographic area is called as
Answer» Alien Natural Endemic Pandemic ANSWER :C

Discussion

5078.	Question : The polynucleotides were found in which of the following meteorites which fell in Ukraine?
Answer» Muchison meterite Mighi METEORITE Meteorite Both (a)and (B) ANSWER :D

Discussion

5079.	Question : The polypeptide chains present in gamma immunoglobulin are
Answer» 2 4 6 8 Solution :2

Discussion

5080.	Question : The polymerase that has 5'-3' exonuclease property is known as ......... .(DNA pol-I, DNA pol-II, RNA pol, DNA ligase)
Answer» DNA POL I DNA pol II RNA pol DNA ligase Answer :C

Discussion

5081.	Question : The polymerase chain reaction is a technique that
Answer» Is used for n vivo replication of DNA It is used for in vivo synthesis of mRNA Is used for in VITRO synthesis of mRNA Is used for in vitro replication of specific DNA sequence using THERMOSTABLE DNA POLYMERASE Answer :D

Discussion

5082.	Question : The pollutants which are already present in nature but are released in substantial amounts by man are known as:-
Answer» QUALITATIVE pollutants Degradable pollutants Primary pollutants Quantitative pollutants Answer :D

Discussion

5083.	Question : The polymerase chain reaction
Answer» quickly AMPLIFIES the small samples of DNA is involved in the production of transgenic organisms is used to make literally billions of copies in only a few hours STARTS with one gene sized piece of RNA ANSWER :D

Discussion

5084.	Question : The pollination with the help of wind is termed as
Answer» CHEIROPTEROPHILY HYDROPHILY ornithophyily ANEMOPHILY ANSWER :D

Discussion

5085.	Question : The pollutant that seriouslyaffect the marble monuments mainly containtsthe chemical have thenature is
Answer» acidic basic neutral none of the above Answer :A

Discussion

5086.	Question : The pollination with the help of wind is termed as(A) anemophily(B) ornithophily(C) hydrophily(D) chiropterophily
Answer» anemophily ornithophily hydrophily cheiropteropily Answer :A

Discussion

5087.	Question : The pollen tube was first discovered by :-
Answer» Maheshwari Strasburger Nawaschin Amici Answer :D

Discussion

5088.	Question : The pollen grain is related to the embryo sac as(A) male gametophyte is to the egg(B) male gametophyte is to the female gametophyte(C) sperm is to the egg(D) sperm is to the female gametophyte
Answer» MALE GAMETOPHYTE is to the egg male gametophyte is to the FEMALE gametophyte sperm is to the egg sperm is to the female gametophyte Answer :B

Discussion

5089.	Question : The pollen tube enters the synergid through :-
Answer» LATERAL walls Filiform apparatus Chalazal end Any of these regions Answer :B

Discussion

5090.	Question : The point of contact where the non-sister chromatids of a homologue chromosome cross over each other is called what ?
Answer» ANSWER :CHIASMATA

Discussion

5091.	Question : The point mutation sequence for transition, transition, transversion and transversion in DNA are
Answer» A to T, T to A, C to G and G to C A to G , C to T , C to G and T to A C to G , A to G , To to A and G to A G to C , A to T , T to A and C to G ANSWER :B

Discussion

5092.	Question : The point mutation A to G,C to T,C to G,T to A in DNA are
Answer» TRANSVERSION, TRANSITION, TRANSLOCATION, FRAME shift respectively transition, transition, transversion, transversion respectively transition only frame shift (gibbersish) metations only Answer :B

Discussion

5093.	Question : The point mutation A to G, C to T, C to G, T to A in DNA are :
Answer» TRANSVERSION, TRANSITION, TRANSLOCATION, frame-shift RESPECTIVELY Transition, transition, transversion, transversion respectively Transition only Transversion only Answer :B

Discussion

5094.	Question : The PNS is consists of somatic neural system and autonomic neural system, how many statements are incorrect of PNS? i. The somatic neural system relays impulses from the CNS to voluntary musclesii. Autonomic neural system transmits impulses fim the CNS to the involuntary ortgans and smooth muscles of the body iii. The autonomic neural system is further into sympathetic neural system and parasympathetic neural system iv. The somatic neural system relays impulses from the CNS to skeletal muscles
Answer» LESSTHAN TWO Two More than two NONE of these ANSWER :D

Discussion

5095.	Question : The plumule is enclosed by a sheath called coleorhiza
Answer» True False Answer :COLEOPTILE

Discussion

5096.	Question : The Pneumococcus experiment proves that
Answer» DNA is the genetic material RNA sometime CONTROLS the production of DNA and proteins bacteria undergo BINARY fission bacteria do not reproduce sexually Solution :The Pneumococcus experiment proves that DNA in the genetic material as Frederick Griffith (1928) found that ' SOMETHING' passed from heat - killed encapsulated forms of Pneumococcus to live non - capsules and BECOME VIRULENT . Avery et al , (1944) found this transforming agent (hence, genetic material) to be DNA.

Discussion

5097.	Question : The ploidy level of secondary nucleus of embryosac is :-
Answer» 2n 3n 4n 5n Answer :A

Discussion

5098.	Question : The plnat htat has cauline advenitious buds is
Answer» bryophyllum BEGONIA ARTOCARPUS IPOMOEA Answer :C

Discussion

5099.	Question : The ploidy of males produced by arrhenotoky parthenogenesis is ................. .
Answer» SOLUTION :HAPLOID

Discussion

5100.	Question :The ploidy of testa and tegmen is respectively :
Answer» N , n 2N , 2n 2n , n 2 , 2n Answer :B

Discussion

Explore topic-wise InterviewSolutions in .

Question : The presence of diversity at the junction of territories of two different habitats is known as:

Question : The presence of arginase confirms that

Question : The presence and position of which one of the following defines the template and coding strands in a transcription unit?

Question : The prescnce of arginase confirms that the

Question : The pregnancy test is based on detection of which hormone ?

Question : The preparation oand flavoruing of leaves of tea and tobacco is due to the activities of

Question : The predominant-site for control of gene expression in prokaryotes is

Question : The prebiotic atmosphere of the earth was of a reducing nature. It was transformed into an oxidizing atmosphere of present day due to the emergence of

Question : The practice of maintenance of honeybees for the production is called …........

Question : The power of young birds to return to the original grounds of parents is

Question : The practical purpose of classification of living organisms is to

Question : The powder developed by Mr. Ahmad Khan from plastic.

Question : The posterior pituitary.

Question : The posterior pituitary is under the

Question : The possible beneficial effect of grazing animals is the

Question : Fill up the blanks after reading the statement. Post-fertilization events in angiosperms. Zygote : Embryo Ovule : _____ Ovary : _____

Question : The possibilities of hereditary and evolutionary changes are greatest in species which are reproduced by:

Question : The population size in nature could be as lt10 for

Question : The population size in more technically called

Question : The population of an insect species shows explosives increase in numbers during rainy season followed by its disappearance at the end of the season. What does this shows ?

Question : The population of grey coloured Biston betularia, were almost replaced by the black variety during the industrial revolution in England. Explain the mechanism involved.

Question : the population of an insect species shows and explosive increase in number during rainy season followed by its disappearance at the end of the season. what does the show?

Question : The population of an insect species shows an explosive increase in numbers during rainy season followed by its disappearance at the end of the season. What does this show?

Question : The population of an insect species shows an explosive increase in number during rainy season followed by its disapperance at the end of the season.What does this show?

Question : The poplution dynamics of a species is basically regulated by :

Question : Population of an insect species increases explusively during rainy season and then disappears at the end of the season . It shows :

Question : The population limited to a particular geographic area is called as

Question : The polynucleotides were found in which of the following meteorites which fell in Ukraine?

Question : The polypeptide chains present in gamma immunoglobulin are

Question : The polymerase that has 5'-3' exonuclease property is known as ......... .(DNA pol-I, DNA pol-II, RNA pol, DNA ligase)

Question : The polymerase chain reaction is a technique that

Question : The pollutants which are already present in nature but are released in substantial amounts by man are known as:-

Question : The polymerase chain reaction

Question : The pollination with the help of wind is termed as

Question : The pollutant that seriouslyaffect the marble monuments mainly containtsthe chemical have thenature is

Question : The pollination with the help of wind is termed as(A) anemophily(B) ornithophily(C) hydrophily(D) chiropterophily

Question : The pollen tube was first discovered by :-

Question : The pollen grain is related to the embryo sac as(A) male gametophyte is to the egg(B) male gametophyte is to the female gametophyte(C) sperm is to the egg(D) sperm is to the female gametophyte

Question : The pollen tube enters the synergid through :-

Question : The point of contact where the non-sister chromatids of a homologue chromosome cross over each other is called what ?

Question : The point mutation sequence for transition, transition, transversion and transversion in DNA are

Question : The point mutation A to G,C to T,C to G,T to A in DNA are

Question : The point mutation A to G, C to T, C to G, T to A in DNA are :

Question : The plumule is enclosed by a sheath called coleorhiza

Question : The Pneumococcus experiment proves that

Question : The ploidy level of secondary nucleus of embryosac is :-

Question : The plnat htat has cauline advenitious buds is

Question : The ploidy of males produced by arrhenotoky parthenogenesis is ................. .

Question :The ploidy of testa and tegmen is respectively :

Question : Fill up the blanks after reading the statement. Post-fertilization events in angiosperms. Zygote : Embryo Ovule : _ Ovary : _