24277 + Interview Questions in Biology in Class 12 Page 295 InterviewSolution

14701.	Question : Increased concentration of DDT affects birds.
Answer» Solution :INCREASED concentration of DDT AFFECTS calcium metabolism, which causes THINNING of egg SHELLS. Causes its breakage before maturity.

Discussion

14702.	Question : Increased asthmatic attacks in certain seasons are related to :
Answer» Eating FRUITS preserved in TIN containers Inhalation of seasonal pollen LOW temperature Hot and humid envoronment Answer :B

Discussion

14703.	Question :Increase is dopamine, that results in hallucinations and disorder behaviour is referred to as
Answer» Alopacia Schizophrenla Nyctalopia Cerebral edema Answer :B

Discussion

14704.	Question : Increase of BDO in water leads to :
Answer» INCREASE in the dessolved `O_2`CONCENTRATION Decrease in the dessolved `O_2` concentration maintenance of DISSOLVED `O_2` concentration at the same level no EFFECT on dissolved `O_2` concentration Answer :B

Discussion

14705.	Question : Increase in the level of green house gases leads to global warming. How can it be controlled?
Answer» Solution :Cutting down use of fossil FUEL. Reducing deforestation PLANTING frees Slowing down the GROWTH of HUMAN population

Discussion

14706.	Question : Increase in theconcentrationof toxicantsat suc-cessivetrophic levelis called
Answer» BOD Biomagnification EUTROPHICATION ANGEL BLOOM ANSWER :B

Discussion

14707.	Question : Increase in the concentration of toxicant at successive trophic level is called -
Answer» BOD Biomagnification EUTROPHICATION ALGAL bloom Answer :B

Discussion

14708.	Question : Increase in the concentration of substances at each trophic level of food chain is ......
Answer» Eutrophication Biomagnification Environment conservation Air POLLUTION ANSWER :B

Discussion

14709.	Question : Increase in photosynthetic activity on successive application of beams of different wavelengths of.light.
Answer» ANSWER :EMERSON EFFECT

Discussion

14710.	Question : Increase in noiselevelaboveparticulardBaffectthe hearingabilities,that is
Answer» 20dB 60dB 80dB 150dB Answer :D

Discussion

14711.	Question : Increase in concentration of toxicant at successive trophic levels is called :
Answer» EUTROPHICATION Accelerated eutrophication BIOMAGNIFICATION CULTURAL eutrophication Answer :C

Discussion

14712.	Question : Increase in concentration of the toxicant at successive tropic levels is known as(A) biomagnification(B) biodeterioration(C) biotransformation(D) biogeochemical cycling
Answer» biomagnification biodeterioration biotransformation biogeochemical CYCLING ANSWER :A

Discussion

14713.	Question : Increase in concentration of toxicant at successive trophic levels is
Answer» Eutrophication Biomagnification Cultural Eutrophication Algal bloom Answer :B

Discussion

14714.	Question : Increase in CO_(2) concentration upto .......... Can cause an increase in CO_(2) fixation rate, beyond this the level can become damaging over long periods.
Answer» 0.03 percent 0.04 percent 0.036 percent 0.05 percent Answer :D

Discussion

14715.	Question : Increase in age decreases
Answer» CROSSING over LINKAGE POLYPLOIDY Mutations Answer :A

Discussion

14716.	Question :Increase in body fluid volume
Answer» 1. activates the osmioreceptors 2. suppresses RELEASE of ADH 3. increases ADH secretion 4, PREVENTS diuresis Answer :B

Discussion

14717.	Question : Incorretstatementaboutplasmids is .
Answer» It is activegeneticmaterial It is an INTEGRAL part but inter genetic mataeril Itis MADE up of RNA It replicatesautomously Answer :C

Discussion

14718.	Question : Incorrect statement with regard to ‘diffusion’ is
Answer» It is a slow PROCESS and is dependent on a ‘LIVING system’ Diffusion in solids rather than of solids is more likely Gaseous movement within the plant body OCCURS by means of diffusion only Rate of diffusion is affected by TEMPERATURE and pressure. Answer :A

Discussion

14719.	Question : Incorrect match from the following about the disease causing genes and their location on chromosomes is
Answer» Cystic FIBROSIS Chromosome COOLEY's ANAEMIA Chromosome 11 Haemophilia-C X- chromosome 11 Sickle cell anaemia Chromosome 11 Answer :C

Discussion

14720.	Question : Incorrect match between column-I, II and III
Answer» ANSWER :4

Discussion

14721.	Question : Incorrect about innate immunity is :-
Answer» PRESENT before any EXPOSURE a pathogen effective from the TIME of birth only in vertebrates largely non-specific Answer :C

Discussion

14722.	Question : Incomplete linkage was reported in _____
Answer» Drosophila Neurospora MAIZE PADDY ANSWER :C

Discussion

14723.	Question : Incomplete linkage was reported by Hutcinson in ................
Answer» DROSOPHILA MAIZE NEUROSPORA LATHYRUS odorantus Answer :B

Discussion

14724.	Question : Incompletedominanace and co-dominace
Answer» SOLUTION :

Discussion

14725.	Question : Incomplete dominanace was reported in …..
Answer» Mirabillis Wheat Tobacco Cucurbita Answer :A::B

Discussion

14726.	Question : Inbreeding is possible between two members of :
Answer» ORDER Family Genus Species Answer :D

Discussion

14727.	Question : Inbreeding is necessary to produce pure line generation, Give other merits and demerits of inbreeding.
Answer» Solution :Merits i. Inbreeding EXPOSES HARMFUL recessive genes, that are eliminated by SELECTION ii. It HELPS in the accumulation of SUPERIOR genes and elimination of less desirablc genes. Demerits Close inbreeding usually reduces fertility and cven productivity. This is called inbreeding depression.

Discussion

14728.	Question : Inbreeding is necessary to obtain pure breed.
Answer» Solution :Inbreeding is necessary to obtain pure BREED because inbreeding is REFERRED to the MATING of more closely RELATED individuals within the same breed for 4-6 generations. Inbreeding INCREASES homozygosity. So to obtain pure breed, inbreeding is necessary.

Discussion

14729.	Question :Inbreeding is carried out in animal husbandry because it
Answer» Increases vigour Improves the breed Increases heterozygosity Increases homozygosity Solution :INBREEDING is carried out in ANIMAL HUSBANDRY because it increases homozygosity, i.e. state of possessing two identical alleles. One inherited from each parent. With this method pureline in any animal can be evolved. Pureline can be OBTAINED in any animal can be evolved by this method.

Discussion

14730.	Question : Inbreeding increases by
Answer» SOLUTION :HOMOZYGOSITY

Discussion

14731.	Question : Inbreeding increases ……….. .
Answer» HOMOZYGOSITY heterozygosity heterosis hemizygosity Answer :A

Discussion

14732.	Question : Inbreeding.
Answer» Solution :(1)Inbreeding is the mating of two CLOSELY RELATED individuals within the same breed for 4 to 6 generations.(2)During inbreeding superior males superior females of the same breed are identified.The superior males and superior females from this progeny are identified and used for further mating.(3)Due to inbreeding HOMOZYGOSITY is increased and harmful recessive genes are exposed.Inbreeding is done when a pure line of an animal is expected.(4)Inbreeding helps in accumulation of superior genes and elimaination of harmful or less desirable gens.(5)CONTINUED inbreeding usually reduces FERTILITY and productivity.This is called inbreeding depression.

Discussion

14733.	Question : Inbreeding depression can be overcome by
Answer» Mating of animals of same breed, but having no COMMON ancestors on EITHER side of their pedigree upto 4-6 generations Mating males of one breed with SUPERIOR females of another breed INTERSPECIFIC hybridisation All of these Answer :A

Discussion

14734.	Question : Inborn Immunity and Acquired Immunity.
Answer» SOLUTION :

Discussion

14735.	Question : Inborn immunity is called innate immunityWrite the names of the types of barriers seen in innate immunity
Answer» Solution :(i) Physical BARRIERS (ii) Physiological barriers (III) Cellular barriers (iv) CYTOKINE barriers

Discussion

14736.	Question : Inborn immunity is called innate immunity What are interferons?
Answer» Solution :Chemicals secreted by virus infected CELL are CALLED INTERFERONS.

Discussion

14737.	Question : Inadequate supply of what in diet causes simple goitre in man ?
Answer» ANSWER :IODINE

Discussion

14738.	Question : Inactive precursor form of enzyme.
Answer» ANSWER :ZYMOGEN

Discussion

14739.	Question : Ina given plant, red colourR of fruit is dominant ove rwhite fruit r, and taliness (t) is dominant over dwarness(t). It a plant with genotype RRTt is crossed with a plant over genotype rrtt, what will be next generation?
Answer» 1 0.25 0.5 0.75 Answer :C

Discussion

14740.	Question : ina raceme the flower arrangement is
Answer» basipetal centripetal centrifugal acropetal Answer :d

Discussion

14741.	Question : Inability of gametes to fuse with each other in particular combinations.
Answer» ANSWER :Incompaibility

Discussion

14742.	Question : In Zygotene, homologous chromosomes undergo pairing to form bivalent having 2 homologous chomosomes. These 2 chromosomes are attached larerally due to
Answer» U protein CENTROMERE Ribonucleoprotein ENDONUCLEASE ANSWER :C

Discussion

14743.	Question : In ……. zygote develops a thick wall that is resistant to desiccation and damage. (A) protist (B) moneras and fungi (C) algae and fungi (D) Both (A) and (B)
Answer» PROTIST MONERANS and FUNGI algae and fungi Both (A) and (B) Answer :C

Discussion

14744.	Question : In ZIFT tecnique, the zygote is transferred at the stage of……………..
Answer» 16 BLASTOMERE morula 12 blastomere 8 blastomere SOLUTION :8 blastomere

Discussion

14745.	Question : ZIFT method and GIFT method.
Answer» In uterus of female In VAGINA of female In FALLOPIAN TUBE of female ANYWHERE from above female Answer :C

Discussion

14746.	Question : In ZIFT
Answer» FERTILISATION TAKE place outside the body EMBRYO UPTO 8 blastomeres is usually transferred into uterus Embryo less then 8 blastomeres is usually transferred into uterus Both (1) and (2) Answer :D

Discussion

14747.	Question : In your view what motivates youngsters to take to alcohol or drugs and how can this be avoided?
Answer» Solution :Usually the FIRST use of drug or alcohol may be out of curiosity or experimentation. Gradually they start this habit to ESCAPE facing problems. Generally the teenagers and youngsters fall into the habits of smoking. drinking or taking drug. One of the most EFFECTIVE measures to SAVE them is to identify the situations that may push an adolescent towards the use of alcohol or drug.

Discussion

14748.	Question : In your view what motivates youngsters to take to alcohol or drugs and how can this be avoided ?
Answer» Solution :Adolescents take drugs/alcohol due to following reason: Social and peer pressure. Curiosity and need for ADVENTURE, excitement and experiment. To avoid stress, depression and frustration. To OVERCOME hardships. To avoid unsupportive or unstable FAMILY structures. Perception that it is cool or progressive.This perception is further promoted by TV, MOVIES, newspapers and internet.

Discussion

14749.	Question : In your locality, if a person is addicted to alcohol, what kind of behavioural changes do you observe in that person ? Suggest measures to over come the problem.
Answer» Solution :The immediate adverse effects of drugs and alcohol abuse are manifested in the form of reckless behaviour, vandalism and violence. Excessive doses of drugs may lead to coma and death due to respiratory failure, heart failure or cerebral hemorrhage. A Combination of drugs or their intake along with alcohol GENERALLY results in overdosing and even deaths. The most common warning SIGNS of drug and alcohol abuse among youth include (1) drop in academic performance, (2) UNEXPLAINED absence from school/college, (3) lack of interest in personal hygiene, (4) withdrawal, isolation, (5) depression, (6) fatigue aggressive and rebellious behaviour, (7) deteriorating relationships with family and friends (8) LOSS of interest in hobbies, (9) change in sleeping and eating habits, (10) fluctuations in weight, appetite, etc. There may even be some far-reaching implications of drug/alcohol abuse. If an abuser is unable to get money to buy drugs/ alcohol he/she may turn to stealing. The adverse effects are just not restricted to the person who is USING drugs or alcohol. At times, a drug/ alcohol addict becomes the cause of mental and financial distress to his/her entire family and friends. The age-old adage of. prevention is better than cure. holds true here also. It is also true that habits such as smoking, taking drug or alcohol are more likely to be taken up at a young age, more during adolescence. Hence, it is best to identify the situations that may push an adolescent towards use of drugs or alcohol, and to take remedial measures well in time. In this regard, the parents and the teachers have a special responsibility. Parenting that combines with high levels of nurturance and consistent discipline, has been associated with lowered risk of substance (alcohol/drugs/tobacco) abuse. Some of the measures mentioned here would be particularly useful for prevention and control of alcohol and drugs abuse among adolescents.

Discussion

14750.	Question : In .Z. DNA, pitch of each turn of helix is
Answer» 34 Å 340 nm 250 nm 45 Å Answer :D

Discussion

Explore topic-wise InterviewSolutions in .

Question : Increased concentration of DDT affects birds.

Question : Increased asthmatic attacks in certain seasons are related to :

Question :Increase is dopamine, that results in hallucinations and disorder behaviour is referred to as

Question : Increase of BDO in water leads to :

Question : Increase in the level of green house gases leads to global warming. How can it be controlled?

Question : Increase in theconcentrationof toxicantsat suc-cessivetrophic levelis called

Question : Increase in the concentration of toxicant at successive trophic level is called -

Question : Increase in the concentration of substances at each trophic level of food chain is ......

Question : Increase in photosynthetic activity on successive application of beams of different wavelengths of.light.

Question : Increase in noiselevelaboveparticulardBaffectthe hearingabilities,that is

Question : Increase in concentration of toxicant at successive trophic levels is called :

Question : Increase in concentration of the toxicant at successive tropic levels is known as(A) biomagnification(B) biodeterioration(C) biotransformation(D) biogeochemical cycling

Question : Increase in concentration of toxicant at successive trophic levels is

Question : Increase in CO_(2) concentration upto .......... Can cause an increase in CO_(2) fixation rate, beyond this the level can become damaging over long periods.

Question : Increase in age decreases

Question :Increase in body fluid volume

Question : Incorretstatementaboutplasmids is .

Question : Incorrect statement with regard to ‘diffusion’ is

Question : Incorrect match from the following about the disease causing genes and their location on chromosomes is

Question : Incorrect match between column-I, II and III

Question : Incorrect about innate immunity is :-

Question : Incomplete linkage was reported in _____

Question : Incomplete linkage was reported by Hutcinson in ................

Question : Incompletedominanace and co-dominace

Question : Incomplete dominanace was reported in …..

Question : Inbreeding is possible between two members of :

Question : Inbreeding is necessary to produce pure line generation, Give other merits and demerits of inbreeding.

Question : Inbreeding is necessary to obtain pure breed.

Question :Inbreeding is carried out in animal husbandry because it

Question : Inbreeding increases by

Question : Inbreeding increases ……….. .

Question : Inbreeding.

Question : Inbreeding depression can be overcome by

Question : Inborn Immunity and Acquired Immunity.

Question : Inborn immunity is called innate immunityWrite the names of the types of barriers seen in innate immunity

Question : Inborn immunity is called innate immunity What are interferons?

Question : Inadequate supply of what in diet causes simple goitre in man ?

Question : Inactive precursor form of enzyme.

Question : Ina given plant, red colourR of fruit is dominant ove rwhite fruit r, and taliness (t) is dominant over dwarness(t). It a plant with genotype RRTt is crossed with a plant over genotype rrtt, what will be next generation?

Question : ina raceme the flower arrangement is

Question : Inability of gametes to fuse with each other in particular combinations.

Question : In Zygotene, homologous chromosomes undergo pairing to form bivalent having 2 homologous chomosomes. These 2 chromosomes are attached larerally due to

Question : In ……. zygote develops a thick wall that is resistant to desiccation and damage. (A) protist (B) moneras and fungi (C) algae and fungi (D) Both (A) and (B)

Question : In ZIFT tecnique, the zygote is transferred at the stage of……………..

Question : ZIFT method and GIFT method.

Question : In ZIFT

Question : In your view what motivates youngsters to take to alcohol or drugs and how can this be avoided?

Question : In your view what motivates youngsters to take to alcohol or drugs and how can this be avoided ?

Question : In your locality, if a person is addicted to alcohol, what kind of behavioural changes do you observe in that person ? Suggest measures to over come the problem.

Question : In .Z. DNA, pitch of each turn of helix is