Q. Which of the following shows coiled RNA strand and capsomeres? Poliovirus Tobacco mosaic virus Measles virus Retrovirus Answer: Tobacco mosaic virus
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Q. Archaebacteria differ from eubacteria in: Cell membrane Mode of nutrition Cell shape Mode of reproduction Answer: Cell shape
Q. Which of the following are likely to be present in deep seawater? Eubacteria Blue-green algae Saprophytic fungi Archaebacteria Answer: Archaebacteria
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Q. Satellite RNAs are present in some Plant viruses Viroids Prions Bacteriophages Answer: Plant viruses
Q. Five kingdom system of classification suggested by R.H. Whittaker is NOT based on: Presence or absence of a well-defined nucleus Mode of reproduction Mode of nutrition Complexity of body organization Answer: Presence or absence of a well-defined nucleus
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Q. Specialized cells for fixing atmospheric nitrogen in Nostoc are Akinetes Heterocysts Hormogonia Nodules Answer: Heterocysts
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Q. The asexual spores are not found, vegetative reproduction occurs by fragmentation and sexual organs are absent. Identify the class of fungi. Phycomycetes Ascomycetes Basidiomycetes Deuteromycetes Answer: Basidiomycetes
Q. Which amongst kingdom animalia has become recently extinct? snow leopard indian macaque cheetah tiger Answer: cheetah
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Q. Bacteria that live in hot springs are called Halophiles Thermoacidophiles Methanogens None of the above Answer: Thermoacidophiles
Q. Red tides in sea appear due to Euglena Chrysophytes Dinoflagellates Diatoms Answer: Dinoflagellates
