24277 + Interview Questions in Biology in Class 12 Page 218 InterviewSolution

10851.	Question :Out of the total cost of various ecosystem services, soil formation accounts for about:
Answer» 10 PERCENT 50 percent 60 percent 6 percent ANSWER :B

Discussion

10852.	Question : Out of the total cost of various Ecosystem services, alone soil formation costs upto 50%. How much would climate regulation and habitat for wild life cost upto ?
Answer» 5% Each 6% Each 4% Each 10% Each Answer :B

Discussion

10853.	Question : Out of the following, which is the rate limiting enzyme in glycolysis?
Answer» PYRUVATE kinase Phosphofructo kinase Phosphoglucoisomerase Gluco kinase Answer :B

Discussion

10854.	Question : Out of the following which is a part of female reproductive system?
Answer» Uterus Penis Bulbourethral GLAND URINARY bladder Answer :A

Discussion

10855.	Question : Out of the following combinations which individual will have maximum genetically active DNA ?
Answer» 44 + XX 44+ +XY 44+XYY Down's syndrome Answer :A

Discussion

10856.	Question : Out of six protons extruded into outer mitochondrial chember, only two are available form NADH+H^(+). The others come form
Answer» `FADH_(2)` `NADPH+H^(+)` Matrix Both A and B. Solution :N//A

Discussion

10857.	Question : Out of the 4 whorls of flower, which of the following are sterile? (a) androecium (b) gynoecium © calxy (d) corolla
Answer» (a) & (B) (b) only Only (C) (c) & (d) ANSWER :D

Discussion

10858.	Question : Out of the 12 pairs of ribs in rib cage of human, how many ribs are true and false, respectively?
Answer» 7, 3 14, 6 7, 4 14, 4 Answer :B

Discussion

10859.	Question : Out of oxidative, substrate level and photophosphorylation. How many occur in biological oxidation?
Answer» All of these None of these 2 3 Answer :C

Discussion

10860.	Question : Out of 8 ascospores formed in Neurospora the arrangement is 2a:4A:2a showing
Answer» No crossing over Some meiosis SECOND GENERATION DIVISION First generation division Answer :C

Discussion

10861.	Question : Out of A - T , G - C pairing , bases of DNA may exist in alternate valency state owing to arrangement called :
Answer» Tautomerisational mutation Analogue substitution Point mutation Frameshift mutation Answer :A

Discussion

10862.	Question : Out of megaspre tetrad, the functional megaspore is
Answer» Any megaspore Middle megaspore Micropylar Megaspore Chalazal Megaspore Answer :D

Discussion

10863.	Question : Out of 64 codons, how many of them code for stop signal?
Answer» 3 2 5 4 Answer :A

Discussion

10864.	Question : Out of 25 hot spots_____are found in India.
Answer» ANSWER :TWO

Discussion

10865.	Question : Out of 38 ATP molecules produced per glucose, 30 ATP molecules are formed from NADH/ FADH_2 in:
Answer» EMP Kerbs cycle Respiratory chain Oxidative decarboxylation Answer :C

Discussion

10866.	Question :Out of 64 codons , 61 codons code for 20 types of amino acids , it is called :
Answer» DEGENERACY of GENETIC code Overlapping of gene Wobbling of codon Universality of codon Answer :A

Discussion

10867.	Question : Our wildlife resources are depleting very fast. Suggest possible measures to check the same.
Answer» Solution :The possible MEASURES to check the wildlife resources are i. STRICT legal measures must be given to the poachers. ii. PUBLIC must be made aware about the DEPLETING wildlife resource. iii. By protecting the ecosystem like Biosphere reserves, NATIONAL parks, Sanctuaries etc.

Discussion

10868.	Question : Our of 5 petals of a flower, two are completely internal, two completely external and remaining one is internal at one margin and external at the other margin. Aestivation is
Answer» ASCENDING imbricate Vexillary QUINCUNCIAL Valvate. Answer :C

Discussion

10869.	Question : Our galaxy was originated about
Answer» 100 BILLION years ago 1 billion years ago 1000 billion years ago 100 MILLION years ago ANSWER :A

Discussion

10870.	Question : Otolith is formed of
Answer» CARBOHYDRATE MAGNESIUM LIPID CALCIUM carbonate Answer :D

Discussion

10871.	Question : Oto-rhino-laryneology is the study of
Answer» ENT Bird's anatomy Locomotory system Brain CELLS ANSWER :A

Discussion

10872.	Question : Otolith organ helps in
Answer» HEARING VISION EQUILIBRIUM TACTILE stimulation Answer :C

Discussion

10873.	Question : Other than DNA polymerase, which of the following enzymes involved in DNA synthesis ?
Answer» Topoisomerase Helicase RNA primase all of these. Solution :(d) : Process of DNA synthesis WHEREBY a parent DNA molecule is FAITHFULLY copied , giving rise to two identical daughter moleculesid called DNA replication. In DNA synthesis, DNA polymerase plays an important role having the capability to ELONGATE an existing DNA strand but cannot initiate the synthesis. So, the synthesis is initiated with the help of RNA primer formed by RNA primase. RNA primase synthesises the short RNA primer of about 10 nucleotides that is elongated by DNA polymerase to form an Okazaki fragment of DNA during DNA replication. Helicase unzips the two strandsof DNA and toposiomerase reduces the coiling tension developed due to the unwinding of the twostrands of DNAand topoisomerase reduces the coiling tension developed due to the unwinding of the two STRANDS.

Discussion

10874.	Question : Other name of glycolysis is_____pathway.
Answer» ANSWER :EMP

Discussion

10875.	Question : Other name of glycolysis is:
Answer» EMP-pathway TCA cycle HMS-pathway Carbon-pathway Answer :A

Discussion

10876.	Question : Oswald Avery and others have continued Griffth’s transforming principle to prove DNA as genetic material . Substantiate.
Answer» Solution :Griffith - Experiments rough and SMOOTH strains of Streptococcus PNEUMONIAE. S- Strain - injected to mice - mice die R- Strain - injected to mice - mice alive Heat killed S-Strain injected to mice did not kill them Heat killed S- Strain mixed with R-strain injected to mice they died R strain of bacteria transformed by heat killed S- Strain become virulent but biochemical nature of genetic material not defined- some transforming PRINCIPLE transformed from heat killed S-Strain. Oswald Avery and others worked to determine biochemical were nature and transforming principle proteins, DNA, RNA from heat killed s-CELLS were purified and discovered that DNA alone from S-bacteria cells caused R bacteria to become transformed. Protein digesting proteases, RNA digesting RNases did not affect TRANSFORMATION, transforming substance was not protein or RNA. DNase did inhibit transformation, suggesting that DNA caused transformation and DNA is the hereditary material.

Discussion

10877.	Question : O.T. Avery, Mac Leod and Mc Carty identified this as the genetic material / active factor / trans-formation principle
Answer» DNA RNA Polysaccharide Proteins ANSWER :A

Discussion

10878.	Question : Osteoporosis, an age-related disease of skeletal system, may occur due to
Answer» IMMUNE disorder affecting neuromuscular junction LEADING to fatigue high concentration of `Ca^( + +)` and `NA^(+ + )` DECREASED level of estrogen accumulation of uric ACID leading to inflammation of joints Answer :C

Discussion

10879.	Question : Osteon is found in :-
Answer» FEMUR of RANA tigrina Sternum of pavo Diaphysis PART of femur of human Epiphysis part of HUMERUS of human Answer :C

Discussion

10880.	Question : Osteoid refers to
Answer» The smallest bone of the body The LARGEST bone of the body Young hyaline MATRIX of true bone in which calcium salts are deposited Membranous OSSIFICATION of cranium. Answer :C

Discussion

10881.	Question : Osphresiology is the study of sense of
Answer» Taste Pain Vision Smell ANSWER :D

Discussion

10882.	Question : Osteichthyes can be differentiated from chondrichthyes externally by the presence of:-
Answer» VENTRAL mouth Lateral LINE SENSORY system Terminal mouth Clasper Answer :C

Discussion

10883.	Question : Osmotically inactive chief stored material in animal body is
Answer» PROTEIN Phosphogen Lipid Glycogen. Solution :N//A

Discussion

10884.	Question : osmotic pressure is responsible for the turgidity of plant cells. It plays important role in
Answer» transport opening of stomata preventing WILTING of LEAVES All of the above Answer :D

Discussion

10885.	Question : Osmotic pressure of cell sap is highest in
Answer» Halophytes Mesophytes Hydrophytes Lithophytes Answer :A

Discussion

10886.	Question : Osmotic pressure is highest in
Answer» Halophytes Mesophytes xerophytes lithophytes Answer :A

Discussion

10887.	Question : Osmotic potential and pressure potential of three cells , a,b,s located in different parts of an actively transpiring plant are{:("Cell","O.P (MPa)", "P.P(MPa)"),(a,-0.87,0.44),(b,-0.92,0.34),(c,-0.68,0.27):} which ones are roots hair , root cortical and mesophyll cells respectively
Answer» a,B,c a,c,b c,a,b b,c,a Answer :C

Discussion

10888.	Question :Osmosis is the term used to refer specifically to the diffusion of water across a differentially or semipermeable membrane. Which is not correct about it?
Answer» Osmosis is the movement of solvent from their HIGH CONC. to low conc. through S.P.M. Osmosis is the movement of solution from their low conc. to high conc. through S.P.M. Osmosis is the movement of solvent from higher W to lower W through SPM Osmosis is the movement of solvent from high SOLUTE potential to low solute potential through S.PM. Answer :B

Discussion

10889.	Question : Osmotic inflow of water inside the cell.
Answer» ANSWER :ENDOSMOSIS

Discussion

10890.	Question : Osmosis is the diffusion of:
Answer» solute free energy water solute and solvent Answer :C

Discussion

10891.	Question : Osmosis is observed during
Answer» ABSORPTION of WATER by ROOT hair Symplastic LATERAL conduction Plasmolysis All the above Answer :D

Discussion

10892.	Question : Osmoregulation is maintained by
Answer» PLASMA membrane Nuclear membrane Tonoplast 1 & 3 Answer :D

Discussion

10893.	Question : Osmolarity close to cortex is 300 mOsmol/L and 1200 mOsmol/L in the inner medulla, the gradient mainly caused by
Answer» bicarbonates and GLUCOSE glucose and amino acids NaCl and urea NaCl only ANSWER :C

Discussion

10894.	Question :Osmolarity of which of the following would be the highest?
Answer» Renal fluid in the terminal section of the proximal convoluted TUBULE Blood in the glomerular capillaries Renal fluid in the INITIAL section of the distal convoluted tubule Renal fluid at the hair PIN TURN of the loop of Henle Answer :D

Discussion

10895.	Question : Orunart sex irgab us
Answer» Ovary/Testis Uterus/Seminal VESICLE Breast/Beard Spermatic CORD. ANSWER :A::D

Discussion

10896.	Question : Osculum is seen in :
Answer» Sponges Coelenterates Platyheiminthes Annelids Answer :A

Discussion

10897.	Question : Origin of the word fermentation ________ fervere .
Answer» SOLUTION :N/A

Discussion

10898.	Question : Ornithine cycle occurs in:
Answer» Heart Lung Liver Kidney Answer :C

Discussion

10899.	Question : origin of vegatative branch is
Answer» schizogenous endogenous exogenous internal FORM INTERCALARY meristem Answer :C

Discussion

10900.	Question : Ornithine cycle operates in kidney.
Answer» True False Answer :LIVER

Discussion

Explore topic-wise InterviewSolutions in .

Question :Out of the total cost of various ecosystem services, soil formation accounts for about:

Question : Out of the total cost of various Ecosystem services, alone soil formation costs upto 50%. How much would climate regulation and habitat for wild life cost upto ?

Question : Out of the following, which is the rate limiting enzyme in glycolysis?

Question : Out of the following which is a part of female reproductive system?

Question : Out of the following combinations which individual will have maximum genetically active DNA ?

Question : Out of six protons extruded into outer mitochondrial chember, only two are available form NADH+H^(+). The others come form

Question : Out of the 4 whorls of flower, which of the following are sterile? (a) androecium (b) gynoecium © calxy (d) corolla

Question : Out of the 12 pairs of ribs in rib cage of human, how many ribs are true and false, respectively?

Question : Out of oxidative, substrate level and photophosphorylation. How many occur in biological oxidation?

Question : Out of 8 ascospores formed in Neurospora the arrangement is 2a:4A:2a showing

Question : Out of A - T , G - C pairing , bases of DNA may exist in alternate valency state owing to arrangement called :

Question : Out of megaspre tetrad, the functional megaspore is

Question : Out of 64 codons, how many of them code for stop signal?

Question : Out of 25 hot spots_____are found in India.

Question : Out of 38 ATP molecules produced per glucose, 30 ATP molecules are formed from NADH/ FADH_2 in:

Question :Out of 64 codons , 61 codons code for 20 types of amino acids , it is called :

Question : Our wildlife resources are depleting very fast. Suggest possible measures to check the same.

Question : Our of 5 petals of a flower, two are completely internal, two completely external and remaining one is internal at one margin and external at the other margin. Aestivation is

Question : Our galaxy was originated about

Question : Otolith is formed of

Question : Oto-rhino-laryneology is the study of

Question : Otolith organ helps in

Question : Other than DNA polymerase, which of the following enzymes involved in DNA synthesis ?

Question : Other name of glycolysis is_____pathway.

Question : Other name of glycolysis is:

Question : Oswald Avery and others have continued Griffth’s transforming principle to prove DNA as genetic material . Substantiate.

Question : O.T. Avery, Mac Leod and Mc Carty identified this as the genetic material / active factor / trans-formation principle

Question : Osteoporosis, an age-related disease of skeletal system, may occur due to

Question : Osteon is found in :-

Question : Osteoid refers to

Question : Osphresiology is the study of sense of

Question : Osteichthyes can be differentiated from chondrichthyes externally by the presence of:-

Question : Osmotically inactive chief stored material in animal body is

Question : osmotic pressure is responsible for the turgidity of plant cells. It plays important role in

Question : Osmotic pressure of cell sap is highest in

Question : Osmotic pressure is highest in

Question : Osmotic potential and pressure potential of three cells , a,b,s located in different parts of an actively transpiring plant are{:("Cell","O.P (MPa)", "P.P(MPa)"),(a,-0.87,0.44),(b,-0.92,0.34),(c,-0.68,0.27):} which ones are roots hair , root cortical and mesophyll cells respectively

Question :Osmosis is the term used to refer specifically to the diffusion of water across a differentially or semipermeable membrane. Which is not correct about it?

Question : Osmotic inflow of water inside the cell.

Question : Osmosis is the diffusion of:

Question : Osmosis is observed during

Question : Osmoregulation is maintained by

Question : Osmolarity close to cortex is 300 mOsmol/L and 1200 mOsmol/L in the inner medulla, the gradient mainly caused by

Question :Osmolarity of which of the following would be the highest?

Question : Orunart sex irgab us

Question : Osculum is seen in :

Question : Origin of the word fermentation ________ fervere .

Question : Ornithine cycle occurs in:

Question : origin of vegatative branch is

Question : Ornithine cycle operates in kidney.