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English I
Physics
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Biology
Mathematics
English II
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Question-1
Name the organisms which do not derive energy directly or indirectly from sun
(A)
chemosynthetic bacteria
(B)
pathogenic bacteria
(C)
symbiotic bacteria
(D)
mould
Question-2
Bacterial leaf blight of rice is caused by a species of
(A)
Xanthomonas
(B)
Pseudomonas
(C)
Alternaria
(D)
Erwinia
Question-3
In bacterial chromosomes, the nucleic acid polymers are
(A)
linear DNA molecule
(B)
circular DNA molecule
(C)
of two types - DNA and RNA
(D)
linear RNA molecule
Question-4
In the light of recent classification of living organisms into three domains of life (bacteria, archaea and eukarya), which one of the following statement is true about archaea ?
(A)
Archaea resemble eukarya in all respects
(B)
Archaea have some novel features that are absent in other prokaryotes and eukaryotes
(C)
Archaea completely differ from both prokaryotes and eukaryotes
(D)
Archaea completely differ from prokaryotes
Question-5
The bacterium (
Clostridium; botulinum
) that causes botulism is
(A)
a facultative anaerobe
(B)
an obligate anaerobe
(C)
a facultative aerobe
(D)
an obligate aerobe
Question-6
Viruses that infect bacteria, multiply and cause their lysis, are called
(A)
lysozymes
(B)
lytic
(C)
lipolytic
(D)
lysogenic
Question-7
Which one of the following pairs is not correct matched ?
(A)
Methanogens - Gobar gas
(B)
Yeast - Ethanol
(C)
Streptomycetes - Antibiotic
(D)
Coliforms - Vinegar
Question-8
A few organisms are known to grow and multiply at temperatures of 100-105
o
C. They belong to
(A)
marine archaebacteria
(B)
thermophilic sulphur bacteria
(C)
hot-spring blue-green algae (cyanobacteria)
(D)
thermophilic, subaerial fungi
Question-9
Which statement is correct for bacterial transduction ?
(A)
Transfer of some genes from one bacteria to another bacteria through virus
(B)
Transfer of genes from one bacteria to another bacteria by conjugation
(C)
Bacteria obtained its DNA directly
(D)
Bacteria obtained DNA from other external source
Question-10
The plasmid
(A)
helps in respiration
(B)
genes found inside nucleus
(C)
is a component of cell wall of bacteria
(D)
is the genetic part in addition to DNA in micro-organisms
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Plus 1 Biology Science
ICSE/ISC
Practice in Related Chapters
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Morphology of Flowering Plants
Taxonomy and Phylogeny
Biomolecules
Cell Division
Continuity of life
Cell Membrane
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