Q. Contagium vivum fluidum was proposed by D.J. IvanowskyM.W. BeijernekStanleyRobert Hook Answer: M.W. Beijernek

Q. Organisms living in salty areas are called as methanogenshalophilesheliophytesthermoacidophiles Answer: halophiles

Q. Naked cytoplasm, multinucleated and saprophytic are the characteristics of MoneraProtistaFungiSlime molds Answer: Slime molds

Q. Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen? PseudomonasMycoplasmaNostocBacillus Answer: Mycoplasma

Q. All eukaryotic unicellular organisms belong to MoneraProtistaFungiBacteria Answer: Protista

Q. Viroids differ from viruses in having DNA molecules without a protein coatRNA molecules with a protein coatRNA molecules without a protein coatDNA molecules with a protein coat Answer: RNA molecules without a protein coat

Q. Which of the following components provides a sticky character to the bacterial cell? Nuclear membranePlasma membraneGlycocalyxCell wall Answer: Glycocalyx

Q. Chrysophytes, Euglenoids, Dinoflagellates, and Slime moulds are included in the kingdom MoneraProtistaFungiAnimalia Answer: Protista

Q. Which of the following are the most suitable indicators of SO2 pollution in the environment? ConifersAlgaeFungiLichens Answer: Lichens

Q. Which of the following are found in extreme saline conditions? EubacteriaCyanobacteriaMycobacteriaArchaebacteria Answer: Archaebacteria

Q. Which of the following statements is wrong for viroids? They lack a protein coatThey are smaller than virusesThey cause infectionsTheir RNA is of high molecular weight Answer: Their RNA is of high molecular weight

Q. One of the major components of the cell wall of most fungi is ChitinPeptidoglycanCelluloseHemicellulose Answer: Chitin