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Biological Classification MCQ Question with Answer

Biological Classification MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 50
Which of the following statement is incorrect ?

TMV has a double-stranded RNA molecule.
Most plant viruses are RNA viruses.
The bacteriophage has a double-stranded DNA molecule.
Most animal viruses are DNA viruses.
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Question No : 51
Which of the following statement is correct for both bluegreen algae and bacteria ?

Both show anaerobic respiration.
Both have chlorophyll pigment.
Both are devoid of true nucleus.
None of the above
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Question No : 52
Which of the following statement is not correct for methanogens?

They are archaebacteria.
They live in marshy areas.
Methane is their preferred carbon source.
They are present in guts of several ruminant animals (cow, buffaloes) and produce biogas (CH4) from the dung of these animals.
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Question No : 53
Which one of the following statement is correct for archaea?

Archaea resemble eukaryotes in all respects.
Archaea have some novel features that are absent in other prokaryotes and eukaryotes.
Archaea completely differ from both prokaryotes and eukaryotes.
Archaea completely differ from prokaryotes.
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Question No : 54
Which statement is not correct for viruses ?

Viruses are obligate parasites.
Viruses can multiply only when they are inside the living cells.
Viruses cannot pass through bacterial filters.
Viruses are made up of protein and DNA or RNA (never both DNA and RNA).
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Question No : 55
Protista includes

unicellular eukaryotes with well-defined nucleus only.
unicellular prokaryotes with membrane bound organelles.
unicellular eukaryotes with well-defined nucleus and membrane bound organelles.
both unicellular and multicellular eukaryotes with welldefined nucleus and membrane bound organelles.
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Question No : 56
The bacteria which oxidize various inorganic substances and use the released energy for their ATP production are called _______________.

Archaebacteria
Heterotrophic bacteria
Photosynthetic autotrophic bacteria
Chemosynthetic autotrophic bacteria
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