24277 + Interview Questions in Biology in Class 12 Page 32 InterviewSolution

1551.	Question : What is the main difference between diabetes mellitus and diabetes insipidus?
Answer» Solution :Diabetes mellitus is CAUSED due to DEFICIENCY of INSULIN while diabetes INSIPIDUS is caused due to deficiency of ADH.

Discussion

1552.	Question : What is the main function of bulliform cells ?
Answer» ANSWER :ROLLING of LEAVES

Discussion

1553.	Question : What is the main challenge for production of insulin using r-DNA techniques
Answer» ANSWER :GETTING INSULIN asembled

Discussion

1554.	Question : What is the main cause of extinction of species due to human activities?
Answer» SOLUTION :Overutilization or overexploitation of resources is the MAIN CAUSE for the extinction of the SPECIES.

Discussion

1555.	Question : What is the main cause of concern for today.s youth ?
Answer» SOLUTION :Surveys and statistics show that the use of drugs and alcohol has been on the rise especially among the youth. This is really the cause of concern as it could result in many harmful effects. Proper education and guidance would enable youth to SAFEGUARD themselves against these dangerous behavior patterns and FOLLOW healthy life styles. The drugs which are commonly used OPIOIDS, cannabinoids and coca alkaloids. Majority of these are obtained from flowering plants and fungi.

Discussion

1556.	Question : What is the main cause of extinction of some species in tropical forest
Answer» DEFORESTATION AFFORESTATION Pollution SOIL erosion Solution :Deforestation

Discussion

1557.	Question : What is the main aim of Montreal Protocol?
Answer» Solution :To reduce the emission of CFC.s and other OZONE DEPLETING CHEMICALS.

Discussion

1558.	Question : What is the main aim of farm management?
Answer» Solution :The main aim of FARM management is to boost the production, IMPROVEMENT of QUALITY ad enhancement of INDIAN ECONOMY and employment.

Discussion

1559.	Question :What is the main advantage of GM crops?
Answer» SOLUTION : These CROPS REQUIRE minimum fertilisers and chemicals

Discussion

1560.	Question : What is the length of the adult filarial female worm.
Answer» 60 MM 40 mm 120 mm 80 mm Solution :80 mm

Discussion

1561.	Question : What is the length (in km) of Gujarat costal line ?
Answer» 1600 1640 1500 1460 Solution :1640

Discussion

1562.	Question : What is the latin term of heart?
Answer» ANSWER :COR

Discussion

1563.	Question : What is the larva of filaria worm called ?
Answer» ANSWER :MICROFILARIAE

Discussion

1564.	Question : What is the key difference between primary and secondary sewage treatment?
Answer» Solution :The PRIMARY sewage TREATMENT steps basically involve physical removal of PARTICLES LARGE and small while organic materials are decomposed by MICROBES in secondary sewage treatment.

Discussion

1565.	Question :What is the key difference between primary and secondary sewage treatment?
Answer» Solution : Primary sewage treatment INVOLVES SEQUENTIAL physical PROCESSES LIKE filtration and sedimentation while secondary sewage treatment is biological PROCESS of microbial degradation.

Discussion

1566.	Question : What is the joint between tooth and jaw bone called ?
Answer» ANSWER :Gomphosis

Discussion

1567.	Question : What is the key difference between primary and secondary sewage treatment ?
Answer» SOLUTION :Primary sewage tratment is a PHYSICAL PROCESS. Secondary sewage treatment is a BIOLOGICAL process.

Discussion

1568.	Question : What is the interaction between two species called ?
Answer» SOLUTION :It is called as Interspecific interaction. This could be BENEFICIAL, detrimental or NEUTRAL to either of the SPECIES or for both.

Discussion

1569.	Question : What is the intensity of sound in normal conversation ?
Answer» 10-20 decibel 30-60 decibel 70-90 decibel 120-150 decibel Answer :B

Discussion

1570.	Question : What is the important of knowledge of biodiversity ?
Answer» Systematic studies of PLANTS Systematic studies of ANIMALS (A) and (B) both Plants and animals REPRODUCTIVE organs Solution :(A) and (B) both

Discussion

1571.	Question : What is the innermost layer of gut called?
Answer» ANSWER :MUCOSA

Discussion

1572.	Question : What is the importance of integrated organic farming?
Answer» Solution :No need to use chemical fertilisers for crops. It allows the maximum utilisation of RESOURCE and increases the effciency of production. CROP waste is used to create compost can be used as a NATURAL fertilser.It can also be used to generate natural GAS to meet the energy needs of the farm.

Discussion

1573.	Question : What is the importance of species diversity to the ecosystem and various hypothesis related to it ?
Answer» Solution :Ecologists believed that communities with more species tend to be more stable than those with less species. A stable community show following characteristics : (i) It does not show too much of variations in the year to year productivity. (ii) It must be either resistant to resilient to occassional DISTURBANCES (man-made or natural). (iii) It must be resistant to invasion by ALIEN species. DAVID Tilman through his long-term ecosystem experiments using outdoor plots PROVIDED some concrete evidences of link between species richness and stable community. According to him more species DIVERSE communities show almost constant productivity in total biomass and also contributes to higher productivity.

Discussion

1574.	Question : What is the importance of MALT in human health and disease?
Answer» Solution :MALT: Mucosal Associated Lymphoid Tissue is a lymphoid tissue found in the lining of the major tract such as RESPIRATORY, digestive and urino-genital tracts. The lymphoid tissues PARTICIPATE in the immunological action against the foreign particles ENTERING the BODY.

Discussion

1575.	Question :What is the group of bacteria found in both the rumen of cattle and sludge of sewage treatment ?
Answer» Solution : METHANOGENS- break down CELLULOSIC MATERIAL to PRODUCE `CO_2` and `H_2`

Discussion

1576.	Question : What is the goal of "Project Tiger"?
Answer» SOLUTION :The project ensures a viable population of BENGAL tigers in their NATURAL habitats, PROTECTING them from extinction and preserving areas of biological importance as a natural heritage.

Discussion

1577.	Question : What is the goal of Human Genome Project?
Answer» Solution :Goals of HUMAN Genome PROJECT: (HGP): 1. HGP has helped in identifying the genes that are associated with genetic characteristics. 2. The genetic basis of MANY HEREDITARY diseases can be understood due ot HGP. 3. HGP helps in understanding human genome. 4. Mapping and sequencing human genome is easier now with the help of HGP. 5. Gene structure and function can understood with the help of HGP. 6. Human evolution can be understood by HGP.

Discussion

1578.	Question : What is the genotypic ratio in F_2 OFMendelian monohybrid cross?
Answer» 1:1 3:1 1:1 1 : 2 : 1 Answer :D

Discussion

1579.	Question : what is the genetic disorder in which an individual has an overall masculine development, gynaecomastia and is sterile?
Answer» KLINEFELTER's Syndrome Edward syndrome Down's Syndrome Turner's syndrome Answer :A

Discussion

1580.	Question : What is the genetic difference between total colour blindness and red-green colour blindness?
Answer» Solution :TOTAL colour BLINDNESS is due to incomplete sex linked genes while red-green colour blindness is due to COMPLETE sex LINKAGE.

Discussion

1581.	Question : What is the genetic disorder in which an individual has an overall masculine development, gynaecomastia, and is sterile?
Answer» Turner.s SYNDROME Klinefelter.s syndrome EDWARD syndrome Down.s syndrome Solution :Klinefelter.s syndrome

Discussion

1582.	Question : What is the gap between incisor and pre-molar called?
Answer» ANSWER :DIASTEMA

Discussion

1583.	Question : What is the fusion line between two similar bones called ?
Answer» ANSWER :Symphisis

Discussion

1584.	Question : What is the function of vagus nerve?
Answer» PHARYNGEAL contraction Movement of eye Rotation of eyeball Visceral movements Answer :D

Discussion

1585.	Question : What is the function of the two male gametes produced by each pollen grain in angiosperms
Answer» SOLUTION :A generative cell forms zygote by performing syngamy with EGG cell. This is CALLED syngamy or FERTILISATION. Another male generative cells unites with two polar nuclei and forms triploid ENDOSPERM centre by syngamy

Discussion

1586.	Question : What is the function of testis?
Answer» It produces sperms It produces MALE hormone testosterone Both (a) and (B) It SECRETES progesterone Answer :C

Discussion

1587.	Question : What is the function of tapetum in a developing anther?(A) To draw food materials from the microspores(B) To digest the sporocytes(C) To supply food materials to the developing microsporocytes(D) To give protection to the inner tissue
Answer» To DRAW food materials from the microspores To DIGEST the sporocytes To SUPPLY food materials to the developing microsporocytes To give protection to the inner tissue Answer :C

Discussion

1588.	Question : What is the function of sperm lysins?
Answer» SOLUTION :It DISSOLVES the egg envelop and MAKES way for the ENTRY of sperm.

Discussion

1589.	Question : What is the function of Sertoli cells?
Answer» Solution :Sertoli CELLS PROVIDE NOURISHMENT and SURFACE to the sperm bundles during their DEVELOPMENT.

Discussion

1590.	Question : What is the function of restriction endonuclease inside the host bacterial cell? How do bacteria prevent their own DNA from being cut by endonucleases.
Answer» Solution :RESTRICTION endonucleases present in bacteria provide a defence mechanism against INVADING viruses. Inside the BACTERIAL cell, these enzymes selectively CUT up foreign DNA. Host DNA ismethylated by a modification enzyme (a methylase) to protect it from the restriction endonuclease activity. Therefore, bacteria prevent their own DNA from being cut by endonucleases.

Discussion

1591.	Question : What is the function of Restriction endonuclease?
Answer» RESTRICTS the SYNTHESIS of DNA inside the nucleus Synthesizes DNA Cuts the DNA MOLECULE randomly Cuts the DNA molecule at specific sites Answer :D

Discussion

1592.	Question : What is the function of reservoir in nutrient cycling?
Answer» Solution :The FUNCTION of the reservoir is to MEET with the DEFICIT which occurs due to IMBALANCE in the rate of influx and efflux.

Discussion

1593.	Question :What is the function of methylase enzyme in E.coli-
Answer» Added METHYL group to bacteriophage DNA Added methyl group to bacterial DNA Added ethyl group to bacterial DNA CUTTING of bacterial DNA ANSWER :B

Discussion

1594.	Question : What is the function of Kupffer's cells?
Answer» Bile secretion Digestion of lipid Phagocytosis Digestion of protein Solution :The MAIN function of Kupffer's cells is phagocytosis. They are specialised macrophages located in the liver, lining the walls of the sinusoids. Kupffer's CELL activation is RESPONSIBLE to EARLY ethanol induced liver injury, common in chronic ALCOHOLICS.

Discussion

1595.	Question : What is the function of interstitial cells of Leydig?
Answer» Solution :INTERSTITIAL CELLS of Leydig secrete testosterone which is a MALE SEX hormone.

Discussion

1596.	Question : What is the function of histones in DNA packaging ?
Answer» Solution :Histone are the basic protein that are rich in arginine and lysine. HISTONES form octamer on which DNA is wrapped and form nucleosome that MEANS it HELPS in packaging of DNA in EUKARYOTES.

Discussion

1597.	Question : What is the function of Habencular commissure?
Answer» SOLUTION :Habencular commissure connects the LATERAL walls of DIENCEPHALON or THALAMI with each other.

Discussion

1598.	Question : What is the function of germ pore ?
Answer» EMERGENCE of radicle Absorption of WATER for seed germination Initiation of POLLEN tube Release of MALE gametes Answer :C

Discussion

1599.	Question : What is the function of filiform apparatus?(A) Stigma recognizes proper/ right pollen grain(B) It induces division of germinative cell(C) Produces nectar(D) It guides entry of pollen tube
Answer» Stigma recognizes proper/ RIGHT pollen grain It induces DIVISION of germinative cell Produces nectar It GUIDES ENTRY of pollen tube Answer :D

Discussion

1600.	Question : What is the function of DNA ligase?
Answer» SOLUTION : It SEALS the GAPS between DNA SEGMENTS

Discussion

Explore topic-wise InterviewSolutions in .

Question : What is the main difference between diabetes mellitus and diabetes insipidus?

Question : What is the main function of bulliform cells ?

Question : What is the main challenge for production of insulin using r-DNA techniques

Question : What is the main cause of extinction of species due to human activities?

Question : What is the main cause of concern for today.s youth ?

Question : What is the main cause of extinction of some species in tropical forest

Question : What is the main aim of Montreal Protocol?

Question : What is the main aim of farm management?

Question :What is the main advantage of GM crops?

Question : What is the length of the adult filarial female worm.

Question : What is the length (in km) of Gujarat costal line ?

Question : What is the latin term of heart?

Question : What is the larva of filaria worm called ?

Question : What is the key difference between primary and secondary sewage treatment?

Question :What is the key difference between primary and secondary sewage treatment?

Question : What is the joint between tooth and jaw bone called ?

Question : What is the key difference between primary and secondary sewage treatment ?

Question : What is the interaction between two species called ?

Question : What is the intensity of sound in normal conversation ?

Question : What is the important of knowledge of biodiversity ?

Question : What is the innermost layer of gut called?

Question : What is the importance of integrated organic farming?

Question : What is the importance of species diversity to the ecosystem and various hypothesis related to it ?

Question : What is the importance of MALT in human health and disease?

Question :What is the group of bacteria found in both the rumen of cattle and sludge of sewage treatment ?

Question : What is the goal of "Project Tiger"?

Question : What is the goal of Human Genome Project?

Question : What is the genotypic ratio in F_2 OFMendelian monohybrid cross?

Question : what is the genetic disorder in which an individual has an overall masculine development, gynaecomastia and is sterile?

Question : What is the genetic difference between total colour blindness and red-green colour blindness?

Question : What is the genetic disorder in which an individual has an overall masculine development, gynaecomastia, and is sterile?

Question : What is the gap between incisor and pre-molar called?

Question : What is the fusion line between two similar bones called ?

Question : What is the function of vagus nerve?

Question : What is the function of the two male gametes produced by each pollen grain in angiosperms

Question : What is the function of testis?

Question : What is the function of tapetum in a developing anther?(A) To draw food materials from the microspores(B) To digest the sporocytes(C) To supply food materials to the developing microsporocytes(D) To give protection to the inner tissue

Question : What is the function of sperm lysins?

Question : What is the function of Sertoli cells?

Question : What is the function of restriction endonuclease inside the host bacterial cell? How do bacteria prevent their own DNA from being cut by endonucleases.

Question : What is the function of Restriction endonuclease?

Question : What is the function of reservoir in nutrient cycling?

Question :What is the function of methylase enzyme in E.coli-

Question : What is the function of Kupffer's cells?

Question : What is the function of interstitial cells of Leydig?

Question : What is the function of histones in DNA packaging ?

Question : What is the function of Habencular commissure?

Question : What is the function of germ pore ?

Question : What is the function of filiform apparatus?(A) Stigma recognizes proper/ right pollen grain(B) It induces division of germinative cell(C) Produces nectar(D) It guides entry of pollen tube

Question : What is the function of DNA ligase?