24277 + Interview Questions in Biology in Class 12 Page 442 InterviewSolution

22051.	Question : An example of gene therapy is
Answer» Production of injectable hepatitis B vaccine Production of vaccines in food crops like potatoes which can be eaten Introduction of GENE for ADENOSINE deaminase in PERSONS SUFFERING from SCID Production of test tube babies by artificial insemination and implantation of fertilized eggs Solution : Introduction of gene for adenosine deaminase in persons suffering from SCID

Discussion

22052.	Question : An example of environmental parthenocarpy is ………….. .
Answer» Citrus Cucurbita Pear Apple Answer :A

Discussion

22053.	Question : An example of conjugated protein is
Answer» Haemoglobin/Flavoprotein Globulin Albumin Peptone. Solution :N//A

Discussion

22054.	Question : An example of a seed with endosperm perisperm and caruncle is
Answer» Coffee Lily Castor Cotton Answer :C

Discussion

22055.	Question : An example of bottleneck effect is:
Answer» Pitcairn island population Longneck in giraffes Polydactylic DWARF individuals in the OLD order AMISH population of Lancaster of USA Limbless snakes ANSWER :C

Discussion

22056.	Question : An example of a fistular (i.e. with central cavity) monocot stem is
Answer» ZEA MAYS TRITICUM Asparagus Dracaena Answer :B

Discussion

22057.	Question : An example of a naturally occurring parthenocarpic fruit is
Answer» Guava Mango Banana Apple Answer :C

Discussion

22058.	Question : An example of a double samara fruit is
Answer» OCIMUM and SALVIA HIPTAGE discorea holoptelia ANSWER :B

Discussion

22059.	Question : An example of a allopolyploid _____
Answer» SOLUTION :Rhaphano BRASSICA

Discussion

22060.	Question : An example for herkogamy ……………… .
Answer» Aristolochia Gloriosa primula Lythrum Answer :A

Discussion

22061.	Question : An evolving coacervate- like system would have needed a controlled and constant source of energy for
Answer» MAINTAINING their ORGANISATION making large COMPLEX molecules organising these molecules into STRUCTURAL patterns All of the above Answer :D

Discussion

22062.	Question : An eukaryotic gene has sticky ends produced by restriction endonuclease Eco Ri. The gene is added to a mixture containing Eco RIand a bacterial plasmid that carries two genes, which make it resistant to ampicillin and tetracyline. The plasmid has one recongition site for Eco RI located in the tetracycline resistance gene. This mixture is incubated for several hours and then added to bacteria growing in nutrient broth. The bacteria are allowed to grow overnight and are streaked on a, plate using a techgrow overnight and are streaked on a plate using technique which produces isolated colonies that are clones of the original. Samples of these colonies are then grown in four different media : nutrient broth plus ampicillin, nutrient broth plus tetracycle, nutrient broth plus ampicillin and tetracycline, and nutrient broth contianing no antibiotics. The becteria containing the engineered plasmid would grow in
Answer» The AMPICILLIN and TETRACYCLINE BROTH only The NUTRIENT broth, the ampicillin broth, and the tetracycline broth The nutrient broth and the amplicillin broth only The nutrient broth only Answer :C

Discussion

22063.	Question : An example for commensalism among the following is
Answer» Liver FLUKE - Man Abingdon TORTOISE - GOAT ORCHID - Mango tree Cuckoo - crow Answer :C

Discussion

22064.	Question : An evolutionary process, giving rise to new species adapting to new habitat and ways of life is called
Answer» ADAPTIVE RADIATION Adaptation CONVERGENT evolution Microevolution SOLUTION :Adaptive radiation

Discussion

22065.	Question : an evolutionary pattern characterized by rapid increase in the number and kinds of closely related species is called as
Answer» Convergent evolution DIVERGENT evolution ADAPTIVE radiation Parallel evolution ANSWER :C

Discussion

22066.	Question : An eukaryote which causes severe plant disease comes under
Answer» Moneran Fungi Virus None of these Answer :B

Discussion

22067.	Question : An essential element is that-which:
Answer» Improve health of the plant Is IRREPLACEABLE and indispensable for GROWTH of plants Is FOUND in plant ash Is available in the soil Answer :B

Discussion

22068.	Question : An essential element:
Answer» occurs in PLANT ash Is IRREPLACEABLE and indispensable for plant GROWTH is ABSORBED by root All of the above Answer :B

Discussion

22069.	Question : An epithelium which is commonly found in ducts of glands and tubular parts of nephrons, and is specialised for secretion and absorption, can be identified as ?
Answer» SIMPLE squamous epithelium Simple cuboidal epithelium Simple COLUMNAR epithelium None of these Answer :B

Discussion

22070.	Question : An equaticecosystemhavingluxuriousgrowthof cyan bacteria(Algal bloom ) leads to eutrophication a) what kindof pollutantscause algalbloomtocolonizethe aquaticecosystem ?b)what are theconsequencesof eutrophication ?
Answer» SOLUTION :a)WASTES WATER containslargequalitiesofnutrients b) It causesageingof lakeand damageto INDIGENOUS floraand FAUNA.

Discussion

22071.	Question : An epigynous floweris characterised by
Answer» INFERIOR OVARY SUPERIOR ovary oblique overy HALF superior and half inferior overy Answer :A

Discussion

22072.	Question : An enzyme which increasesthe rate of permeability across the membrane is :
Answer» Premease Catalase Gelatinase Amylase Answer :A

Discussion

22073.	Question : An enzyme that uses viral RNA as template for the synthesis of DNA is
Answer» RNA polymerase reverse transcriptase viral nuclease RNA replicase Answer :B

Discussion

22074.	Question : An enzyme that uses viral RNA as template for the synthesis of DNA is :
Answer» RNA polymerase Reversetranscriptase Viral nuclease RNA replicase Answer :B

Discussion

22075.	Question : An enzyme produced commercially from Saccharomyces cerevisiae(A) Lactase(B) Invertase(C) Amylase(D) Maltase
Answer» LACTASE INVERTASE AMYLASE Maltase Solution :Invertase

Discussion

22076.	Question : An enzyme catalysing the removal of nucleotides from the ends of DNA is
Answer» Endonuclease Exonuclease DNA LIGASE Hind-II Answer :B

Discussion

22077.	Question : An embryologist interested in studying the morphogenetic movements in chick embryo, during 3 cells layer stage of the embryo, added some vital stains as embryonic fate markers (embryonic fate markers usually stain the cells and in future development of embryo the stained cells differen tiate into developing organ. Thus the movement of the cell can be traced). He gave the upper layer green colour, middle layer orange and innermost layer blue. a. Name the 3 layers mentioned above. b. Based on your knowledge regarding the development of an embryo predict three organs with these respective colours.
Answer» Solution :a. Ectoderm - green colour Mesoderm - ORANGE colour Endoderm- BLUE colour b. Ectoderm - Brain, Skin, Spinal cord Mesoderm - Blood, Muscles, Kidney Endoderm - GUT, LIVER, Pancreas

Discussion

22078.	Question :An embryo having more than 16 blastomeres which is produced in laboratory through fertilization. Into what is transferred?
Answer» UTERUS FALLOPIAN TUBE Frimbriae MOUTH of uterus ANSWER :A

Discussion

22079.	Question : Anelement which helpsin joiningthesubunits ofribosomesis
Answer» ETHYLENE Magnesium Ferredoxin AUXIN ANSWER :B

Discussion

22080.	Question : An element involvedin metabolismof urea is
Answer» Na SI NI ZN Answer :C

Discussion

22081.	Question :An elaborate network of filamentous proteinaceous structures present in the cytoplasm of an eukaryotic cell is called
Answer» Cytoskeleton Spindle FIBRES FILAMENTS CONTRACTILE filaments Answer :A

Discussion

22082.	Question : an edibel inflorescence is
Answer» RAPHANUS SATIVUS BRASSICA aleracea brassica rapa mustard Answer :B

Discussion

22083.	Question : An ecosystem, which can be easily damaged but can recover after some time if damaging effect stops, will be having
Answer» LOW STABILITY and HIGH RESILIENCE high stability and low resilience low stability and low resilience high stability and high resilience Answer :A

Discussion

22084.	Question : An ecotype is a type of species in which environmentally induced variations are
Answer» TEMPORARY Genetically not related None of the above Answer :B

Discussion

22085.	Question : An ecosystem,which can be easiliy damaged but can recover after some time if damaging effects stops,will be having
Answer» LOW STABILITY and HIGH resilience high stability and low resilience low stability and low resilience high stability and low resilience Answer :A

Discussion

22086.	Question : An ecosystem which can be easily damaged but can recover after some time if damaging effect stops will be having:
Answer» LOW STABILITY and low RESILIENCE HIGH stability and high resilience Low stability and high resilience High stability and low resilience Answer :C

Discussion

22087.	Question : An ecosystem of the ecosphere is
Answer» Different COMMUNITIES of plants, ANIMALS and MICROBES TOGETHER with their physicochemical environment Different communities of plants and microbes along with their physicochemical environments A localised ASSEMBLAGE of several plants and animals An assemblage of plants, animals and their surrounding Answer :A

Discussion

22088.	Question : The two components of an ecosystem are
Answer» FROGS and MEN WEEDS and trees Biotic and abiotic Plants and animals Answer :C

Discussion

22089.	Question : An ecosystem does not normally alter because it is in a state of
Answer» Homeostasis Imbalance Deficient in light Deficient in components Answer :A

Discussion

22090.	Question : An ecological pyramid of biomass is a representation of the ecosystem.
Answer» TOTAL dry weight at particular trophic LEVEL. Biological material in RELATION to ABIOTIC material Energy flow through each trophic level POPULATION in each food web Solution :Total dry weight at particular trophic level.

Discussion

22091.	Question : An autotetraploid plant beearing a genotype AAAa is called as:
Answer» triplex triploid trisomic monosomic Answer :A

Discussion

22092.	Question : An autoimmune disease is:
Answer» MYASTHENIA gravis haemophilia AIDS NONE of these Answer :A

Discussion

22093.	Question : An association of individuals of different species living in the same habitat and having functional interactions is
Answer» Population ECOLOGICAL niche Biotic community ECOSYSTEM Answer :C

Discussion

22094.	Question : An asthmatic patient has difficulty in breathing. Which of the following would you administer to the patient? Why?
Answer» HISTAMINE to cause vasodilation in the alveoli Norepinephrine, to CONTRACT SMOOTH muscles in the bronchioles Antihistamine, to counteract the broncho-constriction CAUSED by histamine Acetylcholine, to cause bronchoconstriction ANSWER :C

Discussion

22095.	Question : An association essential and beneficial to both the partners is_____
Answer» Mutualism Commensalism Amensalism Competition Answer :A

Discussion

22096.	Question : An area of brain related with strong emotions is
Answer» cerebral CORTEX CEREBELLUM LIMBIC system inedulla dows ANSWER :C

Discussion

22097.	Question : An aquatic ecosystem having luxurious growth of cyano bacteria (Algal bloom) leads to Eutrohication. What kind of pollutant causes algal bloom to colonize the aquatic ecosystem?
Answer» Solution :PRESENCE of LARGE amount of nutrients in the water causes excessive GROWTH of algae.

Discussion

22098.	Question : An antifungal drung is obtained from
Answer» <P>P. griseofulvum R. camembrti R. roqueforti P. notatum ANSWER :A

Discussion

22099.	Question : An antibiotic, which inhibits translation in eukaryotes is
Answer» CHLOROMYCETIN penicillin puromycin tetracycline ANSWER :C

Discussion

22100.	Question : An antibiotic resistance gene in a vector usually helps in the selection of
Answer» Competent BACTERIAL CELLS Transformed bacterial cells Recombinant bacterial cells None of the above Solution :Transformed bacterial cells An antibiotic RESISTANCE gene in a VECTOR usually helps in the selection of transformed cells. The normal E. coli cells are SENSITIVE to antibiotics while the transformed cells are resistant so these antibiotics resistance genes can act as a selectable marker.

Discussion

Explore topic-wise InterviewSolutions in .

Question : An example of gene therapy is

Question : An example of environmental parthenocarpy is ………….. .

Question : An example of conjugated protein is

Question : An example of a seed with endosperm perisperm and caruncle is

Question : An example of bottleneck effect is:

Question : An example of a fistular (i.e. with central cavity) monocot stem is

Question : An example of a naturally occurring parthenocarpic fruit is

Question : An example of a double samara fruit is

Question : An example of a allopolyploid _____

Question : An example for herkogamy ……………… .

Question : An evolving coacervate- like system would have needed a controlled and constant source of energy for

Question : An example for commensalism among the following is

Question : An evolutionary process, giving rise to new species adapting to new habitat and ways of life is called

Question : an evolutionary pattern characterized by rapid increase in the number and kinds of closely related species is called as

Question : An eukaryote which causes severe plant disease comes under

Question : An essential element is that-which:

Question : An essential element:

Question : An epithelium which is commonly found in ducts of glands and tubular parts of nephrons, and is specialised for secretion and absorption, can be identified as ?

Question : An equaticecosystemhavingluxuriousgrowthof cyan bacteria(Algal bloom ) leads to eutrophication a) what kindof pollutantscause algalbloomtocolonizethe aquaticecosystem ?b)what are theconsequencesof eutrophication ?

Question : An epigynous floweris characterised by

Question : An enzyme which increasesthe rate of permeability across the membrane is :

Question : An enzyme that uses viral RNA as template for the synthesis of DNA is

Question : An enzyme that uses viral RNA as template for the synthesis of DNA is :

Question : An enzyme produced commercially from Saccharomyces cerevisiae(A) Lactase(B) Invertase(C) Amylase(D) Maltase

Question : An enzyme catalysing the removal of nucleotides from the ends of DNA is

Question :An embryo having more than 16 blastomeres which is produced in laboratory through fertilization. Into what is transferred?

Question : Anelement which helpsin joiningthesubunits ofribosomesis

Question : An element involvedin metabolismof urea is

Question :An elaborate network of filamentous proteinaceous structures present in the cytoplasm of an eukaryotic cell is called

Question : an edibel inflorescence is

Question : An ecosystem, which can be easily damaged but can recover after some time if damaging effect stops, will be having

Question : An ecotype is a type of species in which environmentally induced variations are

Question : An ecosystem,which can be easiliy damaged but can recover after some time if damaging effects stops,will be having

Question : An ecosystem which can be easily damaged but can recover after some time if damaging effect stops will be having:

Question : An ecosystem of the ecosphere is

Question : The two components of an ecosystem are

Question : An ecosystem does not normally alter because it is in a state of

Question : An ecological pyramid of biomass is a representation of the ecosystem.

Question : An autotetraploid plant beearing a genotype AAAa is called as:

Question : An autoimmune disease is:

Question : An association of individuals of different species living in the same habitat and having functional interactions is

Question : An asthmatic patient has difficulty in breathing. Which of the following would you administer to the patient? Why?

Question : An association essential and beneficial to both the partners is_____

Question : An area of brain related with strong emotions is

Question : An aquatic ecosystem having luxurious growth of cyano bacteria (Algal bloom) leads to Eutrohication. What kind of pollutant causes algal bloom to colonize the aquatic ecosystem?

Question : An antifungal drung is obtained from

Question : An antibiotic, which inhibits translation in eukaryotes is

Question : An antibiotic resistance gene in a vector usually helps in the selection of