24277 + Interview Questions in Biology in Class 12 Page 105 InterviewSolution

5201.	Question : The perception of stimulusof cold treatment/ vernalizationis received by
Answer» LEAVES Shoot APEX AXILLARY BUDS STEM Answer :B

Discussion

5202.	Question : The percentage rof recombination involving th seed shape and seed colour ina plant is 10%. What is the distance (mp) between the genes on a chromosome controlling these characters?
Answer» 5 10 20 15 Answer :B

Discussion

5203.	Question : The percentage of 'T' in DNA Isolated from human liver is observed to be 30% . What is the the expected precentage of other nitrogen bases ?
Answer» Solution :Perecentage of A = 30% (% of A = % T) Rest of the nitrogen bases are G and C 20% each.

Discussion

5204.	Question : The percentage of precipitation that can be stored in dame of India is :
Answer» 55 18 10 43 Answer :C

Discussion

5205.	Question : The percentage of ratio of natality over mortality is called :
Answer» VITAL INDEX TOTAL count Population density none of these ANSWER :A

Discussion

5206.	Question : The percentage of nucleotide A in DNA isolated from human liver isobserved to be 29.6%. What is the expected percentage of T, G and C?Justify.
Answer» Solution :a. T = 30.7%, G = 19.3%, C= 19.3% b. The amount of A is ALWAYS equal to T. So the percentage of T is expected to be very close to 30.7%. G and C TOGETHER would make up the REMAINDER or 100 - (30.7 + 30.7) = 38.6. Thus the percentage of C andG SEPARATELY would be expected to be equal or half of 38. 6 or 19.3

Discussion

5207.	Question : The percentage of forest cover recommended by the national forest policy (1988)is
Answer» 33% for PLAINS and 67% for hills 37% for plains and 63% for hills 20% for plains and 70% for hills 23% for plains and 77% for hills Answer :A

Discussion

5208.	Question : The percentage of nucleotide A in DNA isolated from human liver is observed to be 29.6%. What is the expected percentage of T, G and C? Justify.
Answer» SOLUTION :a. T = 29,6%, G = 20.4%, C = 20.4% b. The amount of A is ALWAYS equal to T. So the percentage of T is 29.6. Gand C together would make up the remainder or 100 – (29.6 + 29.6) = 40.8. Thus the percentage of C and G separately would be expected to be equal or HALF of 40.8 or 20.4.

Discussion

5209.	Question : The percentage of juxtamedullary nephrons in kidneys is _______.
Answer» 0.15 0.45 0.65 0.85 Answer :A

Discussion

5210.	Question : The percentage of gene containing regions in human genome, covered by HGP is about
Answer» `80%` ` 90%` ` 99%` `100%` Answer :C

Discussion

5211.	Question : The percentage of forestcover recommended by the National Forest Policy (1988) is .
Answer» 33% for PLAINS and 67% for HILLS 37% for plainsand 63% for hills 20% for plains and 70% for hills 23% for plains and 77% for hills Answer :A

Discussion

5212.	Question : The percentage of double dominant phenotype in the F_(2)of Meddelian dihybrid cross
Answer» 6.25 62.5 37.5 56.25 Answer :D

Discussion

5213.	Question : The percentage of cell surface that is impenetrable for ions is
Answer» 0.01 0.999 0.9 0.73 Solution :Less that 0.1% of PLASMA MEMBRANE is PERFORATED by pres whichallows the ions to PASS through.

Discussion

5214.	Question : The percentage of extragenic DNA in human genome is about
Answer» `20%` `80%` `70%` `30%` ANSWER :C

Discussion

5215.	Question : The percentage of double recessive phenotype in the F_(2) of a typical dihybrid cross
Answer» 25 50 56.25 6.25 Answer :D

Discussion

5216.	Question : The percentage of blue and red wavelengths of light absorbed by chlorophyll a is
Answer» `40%:4%` `45%:25%` `48%:20%` `40%:30%` Answer :D

Discussion

5217.	Question : The percentage of ab gametes produced by AaBb parent will be
Answer» 25 50 75 12.5 Answer :A

Discussion

5218.	Question : The percentage of base sequences that are nearly identical among all humans is
Answer» `90%` `80%` `99.9%` `89.9%` ANSWER :C

Discussion

5219.	Question : The percentage of adenine in a double stranded DNA isolated from human liver is observed to be 32. What are the expected parcentage of Thymine, Guanine and Cytosine.
Answer» Solution :Adenic = `32%` ,so THYMINE = `32%`, CYTOSINE = `18%`, and GUANINE = `18%`, Accroding to Chargaff.s rule, in a DOUBLE stranded DNA ,the RATIOS between adenine and Thymine and Guanine and cystosine are constant and equal to one.

Discussion

5220.	Question : The percentage of a recombinants in the F_(2) of a typical dihybrid cross is
Answer» 50 25 37.5 62.5 Answer :C

Discussion

5221.	Question : The percentage homozygous recessive gametes in YyRr is
Answer» 0.25 0.5 0.75 1 Solution :0.25

Discussion

5222.	Question : The per individual change in a population due to natality can be estimated by using(Here, DeltaN_(n)) =New individuals , N=initial populations , Deltat=change in time)
Answer» `(Ndeltat)/(DeltaN_(N))` `(NDeltaN_(n))/(t)` `(DeltaN_(n)DELTAT)/(N)` `(DeltaN_(n))/(N Deltat)` ANSWER :D

Discussion

5223.	Question : The peptide hormone mechanism was discovered by
Answer» EW Sutherland Thomas Addison Both (a) and (B) NONE of the above Answer :A

Discussion

5224.	Question : The peptide bonds are present between :
Answer» NUCLEIC acid Organic acid Fatty acid Amino acid Answer :D

Discussion

5225.	Question :The pedicel of the female flower coils after pollination in
Answer» Viola Centaurea Silene Vallisneria Answer :4

Discussion

5226.	Question : The pelvic girdle articulates to
Answer» Sacrum Atlas Coccyx Axis ANSWER :A

Discussion

5227.	Question : The peak concentration of ozoneabovethe surfaceof earth is present at a height of .
Answer» 10 Km 15 Km 20 Km 30 Km Answer :D

Discussion

5228.	Question : The pattern of ecosystem in which density and distribution of species vary along a horizontal gradient is ………. .
Answer» zonation stratification ecological niche speciation Answer :A

Discussion

5229.	Question : The pattern of ecosystem in which density and distribution of species vary along a horizontal gradient is called: (a) Zonation (b) Stratification (c) Ecological niche (d) Speciation.
Answer» SOLUTION :ZONATION

Discussion

5230.	Question : The pathogen of a disease depends on RBCs of human for growth and reproduction. The person with this pathogen suffers with chill and high fever.(a) Identify the disease.(b) Name the pathogen.© What is the causes of fever.(d) Represent the life cycle of the pathogen diagrammatically.
Answer» Solution :(a) Malaria (b) Different species of plasmodium viz p. vivax,p. Malariae and p.falciparum. © Malaria is caused by the TOXINS (haemozin) produced in the human BODY by the malarial parasite.This toxin is realesed by the rupturing of RBCs. (d) LIFE CYCLE of plasmodiumL FIG. 8.1 page 148 , NCERT book, Biology-XII.

Discussion

5231.	Question : The path of sperm transport is given below. Provide the missing steps in blanks boxes.
Answer» SOLUTION :A = Vasa EFFERENTIA, B = Vasa deferens The Seminiferous tubules of the testis open into vasa efferentia through rete testis. The vasa efferentia leave the testis and open into epididymis and located along the posterior surface of each testis. The epididymis leads as vasa deferens. The vas deferens OUTER into abdominal regionand loops over the urinary BLADDER. It obtains a duct from vasa defence and opens into urethra and it is EJACULATORY duct. These ducts store sperms and transport from the testis to the outside through urethra.

Discussion

5232.	Question : The passage of food from the buccal cavity to stomach is called:
Answer» Defaecation Dehydration Deglutition Desalination Answer :C

Discussion

5233.	Question : The participation of local communities helps to conserve the forest in sustainable manner.Name the recently startedproject of Govt .of India
Answer» Solution :In 1980S GOVERNMENT of india has INTRODUCED the concept of joint Forest MANAGEMENT(JFM)

Discussion

5234.	Question : The partially decomposed organic matter is formed by a process called ……… .
Answer» FRAGMENTATION humification mineralization leaching Answer :B

Discussion

5235.	Question : The partially digested food that comes out of stomach is called
Answer» Chyle Chyme Bolus Emulsified fat Answer :B

Discussion

5236.	Question : The partial pressure of oxygen in the alveoli of the lungs is
Answer» EQUAL to that in the BLOOD more than that in the blood less than that in the blood less than that of carbon DIOXIDE Answer :B

Discussion

5237.	Question : The partial pressure of O_2in atmospheric air, alveoli, deoxygenated blood, oxygenated blood and tissues respectively (in mm Hg) is
Answer» 159, 104, 40, 95, 40 0.3,40,45,40,45 104, 40, 95, 40, 40 159, 40 95, 40, 45 76. Answer :A

Discussion

5238.	Question : The part where fertilization of ovum takes place in rabbit, humans and other placental mammals is:
Answer» OVARY Uterus Vagina Fallopian tube Answer :D

Discussion

5239.	Question : The part of the urethra that is surrounded by carpus spongiosum
Answer» URINARY urethra Prostatic urethra Membranous urethra Penile urethra Answer :D

Discussion

5240.	Question : The part of internal ear responsible for hearing
Answer» COCHLEA SEMICIRCULAR canal Utriculus SACCULUS ANSWER :A

Discussion

5241.	Question : The part of human brain that coordinates activities associated with the maintenance of posture, balance and equilibrium
Answer» Pons Cerebellum Medulla Cerebrum Answer :D

Discussion

5242.	Question : The part of DNA molecule that varies among DNA molecule
Answer» PHOSPHATE molecule Nitrogenous bases Sugar molecule All of these Answer :B

Discussion

5243.	Question : The part of fallopian tube closest to the ovary is
Answer» ISTHMUS INFUNDIBULUM Cervix Ampulla ANSWER :B

Discussion

5244.	Question : The part of earth and atmosphere supporting life is :
Answer» BIOTIC community biome ecotone biosphere Answer :D

Discussion

5245.	Question : The part of decidua where placenta is formed is called
Answer» DECIDUA parietalis Decidua basalis Decidua capsularis Deidua functionalis Answer :B

Discussion

5246.	Question : The part fallopian tube closest to the ovary is
Answer» isthmus infundibulum cervix ampulla Answer :B

Discussion

5247.	Question : The papillae present at the antorior úangin an tip of tongue of humans
Answer» Filiform PAPILLAE FUNGI fompapillae Circumvallatpapillae Foliate papillae Answer :B

Discussion

5248.	Question : The parasitism in which the host and the parasite belongs to the same genus or family is ………… .
Answer» kleptoparasitism adelphoparasitism hyperparasitism brood parasitism Answer :B

Discussion

5249.	Question : The palindromes are groups of letters that form the …….when read in both direction forward and backward
Answer» DIFFERENT words same words alternative words both (1) and (2) ANSWER :B

Discussion

5250.	Question : The pancreas
Answer» PRODUCES EXOCRINE products involved in chyme digestion Is exclusively an endocrine gland which produces salivary amylase Contains VILLI to INCREASE surface area Produces urobiligen (a bile pigment) Answer :A

Discussion

Explore topic-wise InterviewSolutions in .

Question : The perception of stimulusof cold treatment/ vernalizationis received by

Question : The percentage rof recombination involving th seed shape and seed colour ina plant is 10%. What is the distance (mp) between the genes on a chromosome controlling these characters?

Question : The percentage of 'T' in DNA Isolated from human liver is observed to be 30% . What is the the expected precentage of other nitrogen bases ?

Question : The percentage of precipitation that can be stored in dame of India is :

Question : The percentage of ratio of natality over mortality is called :

Question : The percentage of nucleotide A in DNA isolated from human liver isobserved to be 29.6%. What is the expected percentage of T, G and C?Justify.

Question : The percentage of forest cover recommended by the national forest policy (1988)is

Question : The percentage of nucleotide A in DNA isolated from human liver is observed to be 29.6%. What is the expected percentage of T, G and C? Justify.

Question : The percentage of juxtamedullary nephrons in kidneys is _______.

Question : The percentage of gene containing regions in human genome, covered by HGP is about

Question : The percentage of forestcover recommended by the National Forest Policy (1988) is .

Question : The percentage of double dominant phenotype in the F_(2)of Meddelian dihybrid cross

Question : The percentage of cell surface that is impenetrable for ions is

Question : The percentage of extragenic DNA in human genome is about

Question : The percentage of double recessive phenotype in the F_(2) of a typical dihybrid cross

Question : The percentage of blue and red wavelengths of light absorbed by chlorophyll a is

Question : The percentage of ab gametes produced by AaBb parent will be

Question : The percentage of base sequences that are nearly identical among all humans is

Question : The percentage of adenine in a double stranded DNA isolated from human liver is observed to be 32. What are the expected parcentage of Thymine, Guanine and Cytosine.

Question : The percentage of a recombinants in the F_(2) of a typical dihybrid cross is

Question : The percentage homozygous recessive gametes in YyRr is

Question : The per individual change in a population due to natality can be estimated by using(Here, DeltaN_(n)) =New individuals , N=initial populations , Deltat=change in time)

Question : The peptide hormone mechanism was discovered by

Question : The peptide bonds are present between :

Question :The pedicel of the female flower coils after pollination in

Question : The pelvic girdle articulates to

Question : The peak concentration of ozoneabovethe surfaceof earth is present at a height of .

Question : The pattern of ecosystem in which density and distribution of species vary along a horizontal gradient is ………. .

Question : The pattern of ecosystem in which density and distribution of species vary along a horizontal gradient is called: (a) Zonation (b) Stratification (c) Ecological niche (d) Speciation.

Question : The pathogen of a disease depends on RBCs of human for growth and reproduction. The person with this pathogen suffers with chill and high fever.(a) Identify the disease.(b) Name the pathogen.© What is the causes of fever.(d) Represent the life cycle of the pathogen diagrammatically.

Question : The path of sperm transport is given below. Provide the missing steps in blanks boxes.

Question : The passage of food from the buccal cavity to stomach is called:

Question : The participation of local communities helps to conserve the forest in sustainable manner.Name the recently startedproject of Govt .of India

Question : The partially decomposed organic matter is formed by a process called ……… .

Question : The partially digested food that comes out of stomach is called

Question : The partial pressure of oxygen in the alveoli of the lungs is

Question : The partial pressure of O_2in atmospheric air, alveoli, deoxygenated blood, oxygenated blood and tissues respectively (in mm Hg) is

Question : The part where fertilization of ovum takes place in rabbit, humans and other placental mammals is:

Question : The part of the urethra that is surrounded by carpus spongiosum

Question : The part of internal ear responsible for hearing

Question : The part of human brain that coordinates activities associated with the maintenance of posture, balance and equilibrium

Question : The part of DNA molecule that varies among DNA molecule

Question : The part of fallopian tube closest to the ovary is

Question : The part of earth and atmosphere supporting life is :

Question : The part of decidua where placenta is formed is called

Question : The part fallopian tube closest to the ovary is

Question : The papillae present at the antorior úangin an tip of tongue of humans

Question : The parasitism in which the host and the parasite belongs to the same genus or family is ………… .

Question : The palindromes are groups of letters that form the …….when read in both direction forward and backward

Question : The pancreas