24277 + Interview Questions in Biology in Class 12 Page 30 InterviewSolution

1451.	Question : What is the requirement to develop artificial seeds when natural seeds are available in ample amount?
Answer» SOLUTION :There are some PLANTS that either do not bear SEEDS or produce a small NUMBER of seeds. For MASS propagation of such plants, development of artificial seeds is required.

Discussion

1452.	Question : What is the reservoir for the carbon cycle?
Answer» SOLUTION :ATMOSPHERE.

Discussion

1453.	Question : What is the reproductive strategy adopted by bamboo to maximise its fitness ?
Answer» Breed multiple TIMES in a life TIME Breed only once in a life time Produce small number of LARGE SIZED offsprings Produce small number of small sized offsprings Answer :C

Discussion

1454.	Question : What is the replication of DNA in prokaryotic cells called ?
Answer» ALPHA replication Beta replication Theta replication Gamma replication Answer :C

Discussion

1455.	Question : What is the reflex involvingmore than one sensory and one motor neuron called ?
Answer» ANSWER :Polysynaptic REFLEX ARC

Discussion

1456.	Question : What is the reason of formation of embryoid from pollen grain in tissue culture medium ?
Answer» CELLULAR totipotency Organpgenesis Double fertilization Testtube culture Answer :A

Discussion

1457.	Question : What is the reducing agent in alcoholic fermentation ?
Answer» FADH Ethanol NADH + 'H^+' 'CO_2' Answer :C

Discussion

1458.	Question : What is the reason of arrested oogenesis in female upto puberty ?
Answer» Nutrition is not PROPERLY available Follicles are not matured Some inhibitory factors released by GRANULOSA CELLS or follicular cells Inactivation of GERMINAL EPITHELIUM of ovary Answer :C

Discussion

1459.	Question : What is the reason for death of bollworms due to Bt toxin protein?
Answer» Inhibition of nerve impluse Disturbed DIGESTION of FOOD in foregut Creation of pores that CAUSE cell swelling and LYSIS in midgut Lysis of CELLS of hindgut Answer :C

Discussion

1460.	Question : What is the raw material for polyblend ?
Answer» Solution :Polyblend is a FINE powder of recycled of modified plastic developed by AHMED Khan. This when mixed with bitumen is USED to LAY roads.

Discussion

1461.	Question : What is the raw material for decomposition?
Answer» SOLUTION :DETRITUS is the RAW MATERIAL for DECOMPOSITION.

Discussion

1462.	Question : What is the ratio of ATP requirement for the fixation of 6 molecules of CO_2 in sugarcane and 5 molecules of N_2 in bean ?
Answer» `5 : 16` `3 : 16` `5 : 8 ` `3 : 8 ` ANSWER :B

Discussion

1463.	Question : What is the quantity of cerebrospinal fluid in adult human beings?
Answer» Solution :CEREBROSPINAL fluid is about 120 ML in adult HUMAN being.

Discussion

1464.	Question : What is the productivity of oceans?
Answer» Solution :The PRODUCTIVITY of oceans is only 55 billion tons. Rest of course, is ONLAND.

Discussion

1465.	Question : What is" the process of seperation and elimination of waste products of cellular metabolism" known as?
Answer» ANSWER :EXCERTION

Discussion

1466.	Question : What is the process of union of two gametes completely and permanently called ?
Answer» ANSWER :Syngamy/fertilization

Discussion

1467.	Question : What is the process of introducing vector into the target bacterial cell known as ?
Answer» Transposition Transduction Transformation Transfection Answer :C

Discussion

1468.	Question : What is the probability of the genotype (a) in F_(2) progeny of the selfed F_(1) plant?
Answer» 44200 44198 44259 44230 Answer :A

Discussion

1469.	Question : What is the process by which a living organism produces young once of its own kind ?
Answer» ANSWER :REPRODUCTION

Discussion

1470.	Question : What is the probability of obtaining pure homozygous individuals, if a cross is made between AaBbCcDd ×x aaBBCCdd individuals ?
Answer» `(2)/(16)` `(1)/(16)` `(16)/(248)` `(1)/(64)` Answer :B

Discussion

1471.	Question : What is the probable period of origin of cyanobacteria ?
Answer» ANSWER :About 3.3 to 3.5 BILLION YEARS AGO

Discussion

1472.	Question : What is the probability of having similar sets are VNTRs in any two individuals?
Answer» Solution :The probability of having similar SETS of VNTRS in any two INDIVIDUALS is one in MILLION.

Discussion

1473.	Question : What is the probability of getting a progeny with AABbCcdd from selfing of tetrahybride parent ?
Answer» `1//64` `1//4` ZERO `1//16` ANSWER :A

Discussion

1474.	Question : What is the probability of gamete AbC produced by a plant having genotype AaBbCc (If all the genes are situated on different chromosomes) ?
Answer» `(1)/(2)` `(1)/(4)` `(1)/(6)` `(1)/(8)` Answer :D

Discussion

1475.	Question : What is the probability of all the offsprings to be girls to a couple if mother delivers three alive and two still births ?
Answer» `1//8` `1//4` `1//32` `1//16` ANSWER :C

Discussion

1476.	Question : What is the principle of commensalism?
Answer» Solution :Commensalism is an interaction between TWO ORGANISMS in which one is benefitted and the other is NEITHER benefitted nor harmed. The species that derives BENEFIT is called the COMMENSAL, while the other species is called the host.

Discussion

1477.	Question : What is the primary purpose of the Kyoto Protocol?
Answer» Solution :The primary PURPOSE of Kyoto PROTOCOL is to reduce the ONSET of global warming by reducing the concentration of green house gases in ATMOSPHERE.

Discussion

1478.	Question : What is the price tag on nature's life support services determined by Robert Constanza?
Answer» SOLUTION :He put an average price tag of US$ 33 trillion a YEAR. It is NEARLY TWICE the value of global gross natural product (GNP).

Discussion

1479.	Question :What is the possibility of life existing elsewhere in the space?
Answer» Solution :PRESENCE of PRIMITIVE atmosphere similar to early earth on some other planets SUGGESTS all the POSSIBILITIES of life existing elsewhere in the SPACE.

Discussion

1480.	Question : What is the position of biodiversity from tropics latitudinal range north 23.5^(@) to south 23.5^(@) ?
Answer» INCREASES Decreases UNCERTAIN Remains EQUAL Solution :Increases

Discussion

1481.	Question : What is the ploidy level of endosperm in gymnosperms ?
Answer» Triploid Haploid Diploid Polyploid Answer :B

Discussion

1482.	Question : What is the phenotypic ratio in case of incomplete dominance
Answer» `9:7` `3:1` `1:2:1` `1:1:1:1` ANSWER :C

Discussion

1483.	Question : What is the phenotypic ratio of the progey obtained in a cross between a female plant with GgIk and a male plant with ggii?
Answer» `9:3:3:1` `1:1:1:1` `1:2:2:1` `3:9:3:1` ANSWER :B

Discussion

1484.	Question : What is the phenotype of (a) I^(A)I^(O) (b) I^(O)I^(O)
Answer» SOLUTION :(a) `I^(A)I^(O)` - A BLOOD GROUP PERSON (B)`I^(O)I^(O)` - O blood group person

Discussion

1485.	Question : What is the PH value of urine of human?
Answer» ANSWER :5.6-6.6

Discussion

1486.	Question : What is the pH of the soil for cultivation of plants ?
Answer» 3.4 - 5.4 6.7 - 7.5 4.5 - 8.5 `5.5-6.0` ANSWER :D

Discussion

1487.	Question : What is the permanent cure of adenosine deaminase (ADA) deficiency in children ?
Answer» BONE marrow transplantation Enzyme replacement THERAPY in which FUNCTIONAL ADA is gien to patient by injection Infusion of genetically engineering LYMPHOCYTES ( in which functional ADA-cDNA is INTRODUCED) into the patient's body Introduction of gene isolated from bone marrow cells producing ADA, into cells at early embryonic stages Answer :D

Discussion

1488.	Question : What is the permanent cure of adenosine deaminase (ADA) deficiency ?
Answer» Bone marrow transplantation Enzyme REPLACEMENT therapy in which functional ADA is given to patient by injection Infusion of genetically engineered lymphocytes (in which functional ADA-CDNA is introduced) into the patient's blood Introduction of GENE ISOLATED from the marrow cells which produce ADA, into the cells of the patient at early embryonic stages Solution :Introduction of gene isolated from the marrow cells which produce ADA, into the cells of the patient at early embryonic stages

Discussion

1489.	Question : What is the peritoneal connection between ovary and uteruscalled ?
Answer» ANSWER :MESOVARIUM

Discussion

1490.	Question : What is the percentage of primary productivity of oceans ?
Answer» `50%` `90%` `32%` `70%` SOLUTION :`32%`

Discussion

1491.	Question : What is the percentage of plasma in the blood and how much water does it contain?
Answer» Solution :There is 55% of plasma in the blood and it CONTAINS 90m to 92% water.

Discussion

1492.	Question : What is the period of intense sexual excitement termed as ?
Answer» ANSWER :ORGASM

Discussion

1493.	Question : What is the percentage of photosynthetically active radiation (PAR) in the incident solar radiation ?
Answer» `100%` `50 %` `1-5%` `2-10%` SOLUTION :`50 %`

Discussion

1494.	Question : What is the percentage of photosynthetically active radiation (PAR), in the incident solar radiation.
Answer» 1 0.5 1-5% 2-10% ANSWER :C

Discussion

1495.	Question : What is the percentage of photosynthetically active radiation ( PAR ) , if incident solar radiation is considered 100% ?
Answer» 1 0.5 1-5 % 2-10 % ANSWER :B

Discussion

1496.	Question : What is the percentage of photosynthetically active radiation (PAR), in incident solar radiation ?
Answer» `100%` `50%` `1-5%` `2-10%` ANSWER :B

Discussion

1497.	Question : What is the percentage of photo-synthetically active radiation (PAR), in the incident solar radiation?
Answer» 100`%` 50`%` 1.50`%` 2-10`%` ANSWER :B

Discussion

1498.	Question : What is the oxidation state of iron in haemoglobin?
Answer» `FE^-` `Fe^(2+)` `Fe^(3+)` `Fe^(4+)` Answer :B

Discussion

1499.	Question : What is the outline sequence by which carbon dioxide may be incorporated into starch by photosynthesis ?
Answer» `PGA +CO_2 to RuBP to ` Triose PHOSPHATE `to` HEXOSE phosphate `to` STARCH `PGA+CO_2 to` RuBP `to` Hexose phosphate `to` Triose phosphate `to` Starch `RuBP+CO_2 to` PGA `to` Hexose phosphate `to` Triose phosphate `to` Starch `RuBP +CO_2 to PGA to` Triose phosphate `to` Hexose phosphate `to` Starch. Answer :D

Discussion

1500.	Question : What is the outermost mesodermal of stomach called?
Answer» ANSWER :Serosa/visceral PERITONIUM

Discussion

Explore topic-wise InterviewSolutions in .

Question : What is the requirement to develop artificial seeds when natural seeds are available in ample amount?

Question : What is the reservoir for the carbon cycle?

Question : What is the reproductive strategy adopted by bamboo to maximise its fitness ?

Question : What is the replication of DNA in prokaryotic cells called ?

Question : What is the reflex involvingmore than one sensory and one motor neuron called ?

Question : What is the reason of formation of embryoid from pollen grain in tissue culture medium ?

Question : What is the reducing agent in alcoholic fermentation ?

Question : What is the reason of arrested oogenesis in female upto puberty ?

Question : What is the reason for death of bollworms due to Bt toxin protein?

Question : What is the raw material for polyblend ?

Question : What is the raw material for decomposition?

Question : What is the ratio of ATP requirement for the fixation of 6 molecules of CO_2 in sugarcane and 5 molecules of N_2 in bean ?

Question : What is the quantity of cerebrospinal fluid in adult human beings?

Question : What is the productivity of oceans?

Question : What is" the process of seperation and elimination of waste products of cellular metabolism" known as?

Question : What is the process of union of two gametes completely and permanently called ?

Question : What is the process of introducing vector into the target bacterial cell known as ?

Question : What is the probability of the genotype (a) in F_(2) progeny of the selfed F_(1) plant?

Question : What is the process by which a living organism produces young once of its own kind ?

Question : What is the probability of obtaining pure homozygous individuals, if a cross is made between AaBbCcDd ×x aaBBCCdd individuals ?

Question : What is the probable period of origin of cyanobacteria ?

Question : What is the probability of having similar sets are VNTRs in any two individuals?

Question : What is the probability of getting a progeny with AABbCcdd from selfing of tetrahybride parent ?

Question : What is the probability of gamete AbC produced by a plant having genotype AaBbCc (If all the genes are situated on different chromosomes) ?

Question : What is the probability of all the offsprings to be girls to a couple if mother delivers three alive and two still births ?

Question : What is the principle of commensalism?

Question : What is the primary purpose of the Kyoto Protocol?

Question : What is the price tag on nature's life support services determined by Robert Constanza?

Question :What is the possibility of life existing elsewhere in the space?

Question : What is the position of biodiversity from tropics latitudinal range north 23.5^(@) to south 23.5^(@) ?

Question : What is the ploidy level of endosperm in gymnosperms ?

Question : What is the phenotypic ratio in case of incomplete dominance

Question : What is the phenotypic ratio of the progey obtained in a cross between a female plant with GgIk and a male plant with ggii?

Question : What is the phenotype of (a) I^(A)I^(O) (b) I^(O)I^(O)

Question : What is the PH value of urine of human?

Question : What is the pH of the soil for cultivation of plants ?

Question : What is the permanent cure of adenosine deaminase (ADA) deficiency in children ?

Question : What is the permanent cure of adenosine deaminase (ADA) deficiency ?

Question : What is the peritoneal connection between ovary and uteruscalled ?

Question : What is the percentage of primary productivity of oceans ?

Question : What is the percentage of plasma in the blood and how much water does it contain?

Question : What is the period of intense sexual excitement termed as ?

Question : What is the percentage of photosynthetically active radiation (PAR) in the incident solar radiation ?

Question : What is the percentage of photosynthetically active radiation (PAR), in the incident solar radiation.

Question : What is the percentage of photosynthetically active radiation ( PAR ) , if incident solar radiation is considered 100% ?

Question : What is the percentage of photosynthetically active radiation (PAR), in incident solar radiation ?

Question : What is the percentage of photo-synthetically active radiation (PAR), in the incident solar radiation?

Question : What is the oxidation state of iron in haemoglobin?

Question : What is the outline sequence by which carbon dioxide may be incorporated into starch by photosynthesis ?

Question : What is the outermost mesodermal of stomach called?