24277 + Interview Questions in Biology in Class 12 Page 108 InterviewSolution

5351.	Question : The number of trophic levels in an ecosystem are limited. Comment
Answer» Solution :Number of trophic levels are limited in ecosystem and are not more than 4 or 5. Because the energy flow decreases at successive level. Therefore remaining energy is USED in Biotic processes to maintain respiration and maintain life. If the number of trophic level are more then remaining energy decreases therefore at second trophic level cannot support in the form of energy flow. Therefore food CHAIN remains limited UPTO 4 to 5 trophic level.E.g. `UNDERSET("(30,000 J)")"Sunlight"overset("1 % is")underset("absorbed")rarrunderset("(300 J)")("Plants")overset("10 % is")underset("transformed")rarrunderset("(30 J)")("deer")overset("10 % gets")underset("converted")rarrunderset("(3 J)")("Tiger")`

Discussion

5352.	Question :The number of triplet codons having all the three bases same in 64 triplet codons is :
Answer» 2 4 6 8 Answer :B

Discussion

5353.	Question : The number of temperature zones in a summer lake is
Answer» 2 3 4 5 Answer :B

Discussion

5354.	Question : The number of taxa exhibiting asexual reproduction is drastically reduced in higher plants (angiosperms) and higher animals (vertebrates) as compared with lower groups of plants and animals. Analyse the possible reasons for this situation.
Answer» Solution :Sexual reproduction improves the quality of PROGENY but reduces the overall number of the offsprings. It creates genetic variation. Hybrid vigour takes place. It can combine the effect of TWO beneficial mutations in the same individual. In MULTICELLULAR sexual species, population consists of two sexes but only is CAPABLE of giving birth to young ones. In asexual organisms, each member of a population is capable of giving birth to OFFSPRING.

Discussion

5355.	Question : The number of substrate level phosphorylation reaction in glycolysis is
Answer» Two One Three Zero Solution :NA

Discussion

5356.	Question : The number of start codons and stop codons in a genetic code are
Answer» 2 + 3 = 5 1 + 3 = 4 1 + 1 = 2 3 Answer :A

Discussion

5357.	Question : the number of species that are known and described range between
Answer» 1.7 - 1.8 billion 13 - 14 LAKH 13 - 14 million 17 - 18 lakh Answer :D

Discussion

5358.	Question : The number of residential flats arose in a city of Kerala is shown above. a. Does this reflect the increase of city population only ? Suggest any two effective methods to control over population in Kerala.
Answer» SOLUTION :a. Internal migration or immigration to city/urbanisation/increase in population of Kerala. b. Birth CONTROL by using CONTRACEPTIVES, control on marriage AGE, family planning etc.

Discussion

5359.	Question : The number of species per unit number of individuals of a biotic community is called
Answer» ABUNDANCE FREQUENCY DIVERSITY DENSITY Answer :B

Discussion

5360.	Question : The number of purines in a segment of DNA molecule is 68. What will be the number of pyrimidines in this segment ?
Answer» 34 43 68 86 Answer :C

Discussion

5361.	Question : The number of purines in a segment of DNA molecule is 68 . What will be the number of pyrimdines in this segment ?
Answer» 34 43 68 86

Discussion

5362.	Question : The number of oxygen molecules produced per quantum of light absorbed is
Answer» oxygen YIELD photosynthesis yield QUANTUM yield ORGANIC yield ANSWER :C

Discussion

5363.	Question : The number of phalanges in the index finger is
Answer» 2 1 4 3 Answer :D

Discussion

5364.	Question : The number of paired bones in the axial skeleton of an adult human is
Answer» 23 34 40 48 Answer :A

Discussion

5365.	Question : The number of oxygen molecules produced per-quantum of light absorbed is
Answer» OXYGEN yield PHOTOSYNTHESIS yield QUANTUM yield Organic yield Answer :C

Discussion

5366.	Question : The number of oxidations, substrate level phosphorylations respectively in HDP pathway are
Answer» 1, 1 2, 1 1, 2 2, 2 ANSWER :C

Discussion

5367.	Question : The number of nucleotide base pairs in the haploid set of human chromosomes
Answer» 1.5 BILLIONS 316.47 billions 3 billions 240 million Answer :C

Discussion

5368.	Question : The number of ova formed through oogenesis from each ovarian follicle is equal to
Answer» The NUMBER of POLAR bodies The number of oogonia The number of SECONDARY oocytes Both 2 & 3 Answer :C

Discussion

5369.	Question : The number of nephrons present in a human being is about
Answer» ONE lakh two lakhs ten lakhs twenty lakhs Answer :D

Discussion

5370.	Question : The number of monohybrids fromed in the F_(2) of a dihybrid cross
Answer» 0 `4//16` `1//16` `8//16` ANSWER :D

Discussion

5371.	Question : The number of mitotic cell division required to produce 256 cells from single cell would be:
Answer» 10 12 6 8 Answer :D

Discussion

5372.	Question : The number of microtubles in a flagellum including those sharing three protofilaments with each other is:
Answer» 11 20 22 10 Answer :B

Discussion

5373.	Question : The number of macro essential mineral elements required by all plants are
Answer» 9 6 8 17 Answer :B

Discussion

5374.	Question : The number of microsporangia present in the anther is …..
Answer» one three two four Answer :D

Discussion

5375.	Question : The number of lobes in the right and left lung of man respectively are
Answer» 2 & 3 3& 2 4 & 2 2 & 4 Answer :B

Discussion

5376.	Question : The number of linkage groups in maize is ____
Answer» 15 20 25 10 Answer :D

Discussion

5377.	Question : The number of individuals in an ecosystem is given . Construct the pyramid of number and energy . Producer -1, Herbivores - 50, Carnivores - 75
Answer» SOLUTION :

Discussion

5378.	Question : The number of kinds of gametes produced by a dihybrid is
Answer» 2 4 6 8 Answer :C

Discussion

5379.	Question : The number of genotypes produced when individual of genotype YyRrTt are crossed with each other?
Answer» 4 64 28 27 Answer :B

Discussion

5380.	Question :The number of genotypes produced in F_2 generation in Mendel's monohybrid cross was :
Answer» 1 2 3 4 Answer :C

Discussion

5381.	Question : The number of genes found in chromosome 1 and Y-chromosome fo human being are__and __ respectively.
Answer» 3000 and 3200 2968 and 231 3200 and 2500 1300 and 1800 Answer :B

Discussion

5382.	Question : The number of genes in human genome is_______.
Answer» ANSWER :23000

Discussion

5383.	Question : The number of follicles mostly occuring ineach etario of follicles of calotropis (madar ) is
Answer» one TWO THREE FOUR to many Answer :B

Discussion

5384.	Question :The number of chromosomes in the shoot tip cells of a maize plant is 20. The number of chromosomes in the microspore mother cells of the same plant shall be :
Answer» 20 10 40 15 Answer :A

Discussion

5385.	Question : The number of chromosomes in the shoot tip cells of a maize plant is 20. The number of chromosomes in the microspore mother cells of the same plant shall be (A) 20(B) 10(C) 40(D) 15
Answer» 20 10 40 15 Solution :Shoot TIP cells of a mazie plant is a sporophytic structure (2n) and microspore MOTHER cells of maize plant is also a sporophytic structure (2n). So, microspore mother cells (MMC) contain 20 CHROMOSOMES.

Discussion

5386.	Question : The number of chlorophyll molecules required to fix
Answer» `2500` `5000` `10000` `50000` ANSWER :A

Discussion

5387.	Question : The number of chromosomes in a diploid cell of papaya is
Answer» 26 18 40 38 Answer :B

Discussion

5388.	Question : The number of chromosomes in a mature mamete gets halved during :
Answer» FORMATION of first polar body Formation of SECOND polar body Meiosis -ll Division of SECONDARY OOCYTE and spermatocyte Answer :A

Discussion

5389.	Question : the number of children that a couple must produce to replace them is called
Answer» BIOTIC potential CLONE reproductive potential RAMET Answer :A

Discussion

5390.	Question : The number of carpals and tarsals in the human skeleton are respectively
Answer» 14 and 16 16 and 14 14 and 14 16 and 16 Answer :B

Discussion

5391.	Question : The number of calves produced during its whole reproductive period of a cow or buffalo is
Answer» 8-10 Calves 15-20 Calves 12-16 Calves 5-7 Calves Answer :A

Discussion

5392.	Question : The number of bones that make up the human skull is
Answer» 22 28 14 29 Answer :D

Discussion

5393.	Question : The number of births plus the number of immigrants is the major component is determining the
Answer» DENSITY of population sex ration age disrribution species composition Answer :A

Discussion

5394.	Question : The number of bp in each turn of B-DNA helix is
Answer» 1 10 20 5 Answer :B

Discussion

5395.	Question : The number of ATP produced when a molecular of glucose undergoes fermentation is:
Answer» 4 36 2 38 Answer :C

Discussion

5396.	Question : The number of base pairs in dystrophin gene of human bodyare
Answer» 20000 KILO BASE pairs 24000 kilo base pairs 30000 kilo base pairs 35000 kilo base pairs Answer :B

Discussion

5397.	Question : The number of base pairs in E.coli is
Answer» `6.6 XX 10^9` `4.6 xx 10^6` `0.34 xx 10^6` `1.36 xx 10^9` ANSWER :B

Discussion

5398.	Question : The number of ATP required in excess to assimilate atmospheric CO_2 to four molecules of triose phosphates in C_2 plants as compared to C_3 plants is
Answer» 60 24 30 12 Answer :B

Discussion

5399.	Question : The number of ATP required in mosophyll cells of C_3 plants and bundle sheath cells of C_4 plants respectively for net export of 12 G - 3 -P during dark reaction
Answer» 108 and 180 18 and 30 18 and 18 108 and 108 Answer :D

Discussion

5400.	Question : The number of adenine molecules in a given DNA segment is 25 and the number of cytosine molecules is 45, the total number of nucleotides in the segment is ………. .
Answer» 70 140 90 50 Answer :B

Discussion

Explore topic-wise InterviewSolutions in .

Question : The number of trophic levels in an ecosystem are limited. Comment

Question :The number of triplet codons having all the three bases same in 64 triplet codons is :

Question : The number of temperature zones in a summer lake is

Question : The number of taxa exhibiting asexual reproduction is drastically reduced in higher plants (angiosperms) and higher animals (vertebrates) as compared with lower groups of plants and animals. Analyse the possible reasons for this situation.

Question : The number of substrate level phosphorylation reaction in glycolysis is

Question : The number of start codons and stop codons in a genetic code are

Question : the number of species that are known and described range between

Question : The number of residential flats arose in a city of Kerala is shown above. a. Does this reflect the increase of city population only ? Suggest any two effective methods to control over population in Kerala.

Question : The number of species per unit number of individuals of a biotic community is called

Question : The number of purines in a segment of DNA molecule is 68. What will be the number of pyrimidines in this segment ?

Question : The number of purines in a segment of DNA molecule is 68 . What will be the number of pyrimdines in this segment ?

Question : The number of oxygen molecules produced per quantum of light absorbed is

Question : The number of phalanges in the index finger is

Question : The number of paired bones in the axial skeleton of an adult human is

Question : The number of oxygen molecules produced per-quantum of light absorbed is

Question : The number of oxidations, substrate level phosphorylations respectively in HDP pathway are

Question : The number of nucleotide base pairs in the haploid set of human chromosomes

Question : The number of ova formed through oogenesis from each ovarian follicle is equal to

Question : The number of nephrons present in a human being is about

Question : The number of monohybrids fromed in the F_(2) of a dihybrid cross

Question : The number of mitotic cell division required to produce 256 cells from single cell would be:

Question : The number of microtubles in a flagellum including those sharing three protofilaments with each other is:

Question : The number of macro essential mineral elements required by all plants are

Question : The number of microsporangia present in the anther is …..

Question : The number of lobes in the right and left lung of man respectively are

Question : The number of linkage groups in maize is ____

Question : The number of individuals in an ecosystem is given . Construct the pyramid of number and energy . Producer -1, Herbivores - 50, Carnivores - 75

Question : The number of kinds of gametes produced by a dihybrid is

Question : The number of genotypes produced when individual of genotype YyRrTt are crossed with each other?

Question :The number of genotypes produced in F_2 generation in Mendel's monohybrid cross was :

Question : The number of genes found in chromosome 1 and Y-chromosome fo human being are__and __ respectively.

Question : The number of genes in human genome is_______.

Question : The number of follicles mostly occuring ineach etario of follicles of calotropis (madar ) is

Question :The number of chromosomes in the shoot tip cells of a maize plant is 20. The number of chromosomes in the microspore mother cells of the same plant shall be :

Question : The number of chromosomes in the shoot tip cells of a maize plant is 20. The number of chromosomes in the microspore mother cells of the same plant shall be (A) 20(B) 10(C) 40(D) 15

Question : The number of chlorophyll molecules required to fix

Question : The number of chromosomes in a diploid cell of papaya is

Question : The number of chromosomes in a mature mamete gets halved during :

Question : the number of children that a couple must produce to replace them is called

Question : The number of carpals and tarsals in the human skeleton are respectively

Question : The number of calves produced during its whole reproductive period of a cow or buffalo is

Question : The number of bones that make up the human skull is

Question : The number of births plus the number of immigrants is the major component is determining the

Question : The number of bp in each turn of B-DNA helix is

Question : The number of ATP produced when a molecular of glucose undergoes fermentation is:

Question : The number of base pairs in dystrophin gene of human bodyare

Question : The number of base pairs in E.coli is

Question : The number of ATP required in excess to assimilate atmospheric CO_2 to four molecules of triose phosphates in C_2 plants as compared to C_3 plants is

Question : The number of ATP required in mosophyll cells of C_3 plants and bundle sheath cells of C_4 plants respectively for net export of 12 G - 3 -P during dark reaction

Question : The number of adenine molecules in a given DNA segment is 25 and the number of cytosine molecules is 45, the total number of nucleotides in the segment is ………. .

Question : The number of genes found in chromosome 1 and Y-chromosome fo human being areand respectively.