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Natural Reservoir Of Phosphorus Is?

a) rock b) animal bones c) sea water d) fossils Answer: a) rock Explanation: Phosphorus cycle is a sedimentary cycle whose reservoir... View Article

Which Of The Following Are Likely To Be Present In Deep Sea Water?

a) eubacteria b) saprophytic fungi c) archaebacteria d) blue-green algae Answer: c) archaebacteria Explanation: In deep sea water, no... View Article

The Colonies Of Recombination Bacteria Appear White In Contrast To The Blue Colonies Of Non-recombinant Bacteria Because Of?

a) inactivation of glycosidase enzyme in recombinant bacteria b) insertional inactivation of alpha galactosidase in recombinant bacteria c)... View Article

Which Of The Following Is Not Correctly Matched For The Organisms And Its Cell Wall Degrading Enzyme?

a) plant cells -cellulase b) bacteria - lysozyme c) fungi - chitinase d) algae - methylase Answer: d) algae - methylase Explanation:... View Article

DNA Fragments Generated By The Restriction Endonucleases In A Chemical Reaction Can Be Separated By?

a) restriction mapping b) electrophoresis c) polymerase chain reaction d) centrifugation Answer: b) electrophoresis Explanation: The... View Article

A Good Product Of Citric Acid Is?

a) Pseudomonas b) Saccharomyces c) Aspergillus d) Clostridium Answer: c) Aspergillus Explanation: For the formation of citric acid,... View Article

Which Of The Following Bt Crops Is Being Grown In India By The Farmers?

a) Cotton b) Maize c) Soybean d) Brinjal Answer: a) Cotton Explanation: Bt cotton is generally grown in the Bt crop of India.... View Article

The Tendency Of Population To Remain In Genetic Equilibrium May Be Distributed By?

a) lack of mutations b) lack of migration c) lack of random mating d) random mating Answer: c) lack of random mating... View Article

The Process By Which Organisms With Different Evolutionary History Evolve Similar Phenotypic Adaptations In Response To A Common Environmental Challenge Is Called?

a) convergent evolution b) natural selection c) adaptive radiation d) non-random evolution Answer: a) convergent evolution Explanation:... View Article

If Two Persons With ‘ab’ Blood Group Marry And Have A Sufficiently Large Number Of Children, These Children Could Be Classified As ‘a’ Blood Group : ‘ab’ Blood Group :’b’ Blood Group In 1:2:1 Ratio. Modern Technique Of Protein Electrophoresis Reveals The Presence Of Both ‘a’ And ‘b’ Type Proteins In ‘ab’ Blood Group Individuals. This Is An Example Of?

a) incomplete dominance b) codominance c) complete dominance d) partial dominance Answer: b) codominance... View Article

Variation In Gene Frequencies Within Populations Can Occur By Chance Rather Than By Natural Selection. This Is Referred To As?

a) genetic drift b) genetic load c) random mating d) genetic flow Answer: a) genetic drift... View Article

Which Of The Following Statements Is Not True Of Two Genes That Show 50% Recombination Frequency?

a) if the genes are present on the same chromosome, they undergo more than one crossovers in every meiosis b) the genes show an independent... View Article

Perisperm Differs From Endosperm In?

a) its formation by fusion of secondary nucleus with several sperms b) being a diploid tissue c) having no reserve food d) being a haploid... View Article

Monoecious Plant Of Chara Shows Occurence Of?

a) upper oogonium and lower antheridium on the same plant b) upper antheridium and lower oogonium on the same plant c) stamen and carpel on... View Article

Advantage Of Cleistogamy Is?

a) vivipary b) more vigorous offspring c) no dependence on pollinators d) higher genetic variability Answer: c) no dependence on... View Article

Meiosis Takes Place In?

a) conidia b) gemmule c) meiocyte d) megaspore Answer: c) meiocyte Explanation: Meiocytes are cells wherein meiosis occurs.... View Article

Product Of Sexual Reproduction Generally Generates?

a) large biomass b) new genetic combination leading to variation c) prolonged dormancy d) longer viability of seeds Answer: b) new... View Article

The First Stable Product Of Fixation Of Atmosphere Nitrogen In Leguminous Plants Is?

a) NO3- b) NO2- c) Glutamate d) Ammonia Answer: d) Ammonia Product of fixation of N2 in leguminous plants by their symbiotic associate... View Article

Which Of The Following Criteria Does Not Pertain To Facilitated Transport?

a) requirement of special membrane proteins b) uphill transport c) high selectivity d) transport saturation Answer: b) uphill transport... View Article

During Seed Germination Its Stored Food Is Mobilized By?

a) ABA b) Cytokinin c) Gibberellin d) Ethylene Answer: c) Gibberellin Explanation: Gibberellins have the function of breaking seed... View Article

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