1
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Bacterial leaf blight of rice is caused by a species
A
Alternaria
B
Erwinia
C
Xanthomonas
D
Pseudomonas.
2
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Thermococcus, Methanococcus and Methanobacterium exemplify
A
backteria whose DNA is relaxed or positively supercoiled but which have a cytoskeleton as well as mitochondria
B
bacteria that contain a cytoskeleton and ribosomes
C
archaebacteria that contain protein homologous to eukaryotic core histones
D
archaebacteria that lack any histones resembling those found in eukaryotes but whose DNA is negatively supercoiled.
3
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
In the light of recent classification of living organisms into three domains of life (bacteria, archaea and eukarya), which one of the following statements in true about archaea?
A
Archaea completely differ from both prokaryyotes and eukaryotes.
B
Archaea completely differ from prokaryotes.
C
Archaea resemble eukarya in all respects.
D
Archaea have some novel features that are absent in other prokaryotes and eukaryotes.
4
AIPMT 2007
MCQ (Single Correct Answer)
+4
-1
Which one of the following is a slime mould?
A
Physarum
B
Thiobacillus
C
Anabaena
D
Rhizopus
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