PRACTICE PAPER
1. Which of the following is not found in
bacteria?
(a) Endoplasmic reticulum
(b) Cell wall
(c) DNA
(d)
Cell cytoplasm
2. The
chief component of bacterial cell wall is
(a)Cellulose and chitin
(b)Cellulose and pectin
(c)Amino acids and polysaccharides
(d)Cellulose and carbohydrates
3. Chemosynthetic bacteria are those bacteria
(a)Which carry out photosynthesis
(b)Which synthesize food without light
(c)Which are unable to carry out chemical
process
(d)Which carry out photosynthesis in
absence of light
4. Bacteria
bearing flagella all over the body are called
(a) Peritrichous (b) Atrichous
(c) Monotrichous (d) Cephalotrichous
5.
Bacterial ribosomes are called
(a) Autosomes (b) Dictyosomes
(c) Centrosomes (d) Polyribosomes
6. What is
the nuclear material of bacterium?
(a) Nucleic
acid and histone protein
(b) Nucleic
acid and cytoplasm
(c) Only
nucleic acid
(d) All
the above
7. Which one of the following is correct for
structure of cell wall of fungi and bacteria?
(a) Both have glycopeptides
(b) Both are made up of N- acetyl glucosamine
(c)
Both are made up of N- acetyl
glucosamine and cellulose
(d) Both are made up of chitin
8. Fimbriae are
(a) Organs
of adhesion
(b) Antigenic
(c) Organs
which form conjugation tube through which genetic material is transferred from
donor to recipient cell
(d) All
the above
9. The cells of bacterium Staphylococcus remain
arranged in the form of
(a)
Plate (b) Cube
(c)
Irregular cluster (d) Chain
10. Bacteria and other monerans do not possess
(a)
Ribosomes (b) Mitochondria
(c)
Nucleoid (d) Plasma
11. Organisms which have cells but no distinct
nucleus
(a)
Bacteria (b)Cyanobacteria
(c)
Both (a) and {b) (d) None of
these
12. Many bacteria bear minute hairy structures on
their cell wall, these are called
(a) Hairs (b) Flagella
(c)
Pili (d) Cilia
13. Circular DNA molecule occurs in
(a) Viruses
(b)Bacteria, chloroplasts and mitochondria
(c) Bacteria and chloroplasts only
(d) Bacteria only
14. Bacterial cells can be stained with
(a)
Mercuric chloride
(b)
Crystal violet
(c)
Crystal violet and iodine
(d) Safranin
15. Unlike
other algae, diatoms do not readily decay due to
(a) Siliceous wall
(b)
Mucilaginous wall
(c)
Water proof cell wall
(d)
Nonliving cells which one of the
16. Sexual
reproduction in protists with diploid chromosomes involves
(a)
Cyst formation
(b)
Zygotic meiosis
(c)
Gametangial meiosis
(d)
Binary fission
17. Diatoms
stay afloat due to
(a)
Pseudopodia (b) Flagella
(c)
Stored lipids (d) All the
above
18. Gametic
meiosis occurs in protists which are
(a)
Diploid (b) Haploid
(c)
Tetraploid (d) Mesokaryotic
19. Murein
is not found in the cell wall of
(a)
Nostoc (b) Eubacteria
(c)
Cyanobacteria (d) Diatoms
20. The
class of phylum protozoa to which 'Noctiluca' belongs, is
(a)
Rhizopoda (b) Sporoioa
(c)
Mastigophora (d) Ciliata
21. Slimy mass of protoplasm with many nuclei and
an Amoeba like thalloid body is a characteristic feature of
(a)
Ascomycetes (b) Actinomycetes
(c)
Phycomycetes (d)Basidiomycetes
(e)
Myxomycetes
22.The
infection of Entamoeba histolytica
takes place by
(a)
Trophozoite
(b)
Binucleated cyst
(c)
Trinucleated cyst
(d)
Quadrinucleated cyst
23. Which is not the locomotory organ of protozoa?
(a)
Cilia (b) Flagella
(c)
Pseudopodia (d) Parapodia
24. Which protozoan is unlikely to have a contractile vacuole?
(a)
Euglena (b) Paramecium
(c)
Amoeba (d) Plasmodium
25. The protozoan parasite which possesses a food vacuole is
(a)
Leptomonas (b) Plasmodium
(c)
Trypanosoma (d) Leishmania
26. An example of iron bacteria is
(a)
Beggiatoa
(b)
Geobacillus
(c) Ferrobacillus
(d) None of these
27. Bacterial cell divides in every minute it
takes one hour to fill up a cup. How much time will be taken to fill half the
cup
(a)
59 minutes (b) 30 minutes
(c)
60 minutes (d) 29 minutes
28. Transformation experiments using Pneumococcus
bacteria led to the hypothesis that
(a) DNA is the genetic material
(b) Bacteria have sexual reproduction
(c) Chromosomes are made up of DNA
(d) RNA is the transfer link
29.
Bacteria commonly reproduce vegetatively
by
(a)
Binary fission (b) Budding
(c)
Conjugation (d) Oidia
30. Transfer of genetic information from one
bacterium to another in the transduction process is through
(a) Physical
contact between donor and recipient strains
(b) Conjugation
between opposite strain bacterium
(c) Bacteriophages
released from the donor bacterial strain
(d) Another
bacterium having special organ for conjugation
31. Transfer of DNA from one bacterium to another
.by contact is known as
(a)
Conjugation
(b)
Transformation
(c)
Transduction
(d)
Transcription
32. The sexually in bacteria was established by
(a)
Lederberg and Tatum
(b)
H. J. Muller
(c)
Hargobind Khorana
(d)
Ochoa and Kornberg
33. Clostridium is an example of
(a) Obligate anaerobic nitrogen fixing bacteria
(b) Facultative nitrogen fixing bacteria
(c) Non nitrogen fixing bacteria
(d) Aerobic nitrogen fixing bacteria
34. Which
bacteria is responsible for the reduction of nitrates into nitrogen, in soil
(a)
Streptomyces (b) Pseudomonas
(c)
Rhizobium (d) Clostridium
35. Which
of the following is symbiotic nitrogen
fixes
(a) Streptomyces (b) Anabaena
(c) Frankia (d)
Rhizobium
36. The
denitrification means
(a) Reduction of NO2 to ammonia form by bacteria in the soil
(b) Oxidation of ammonia to nitrate form
(c) Conversion of ammonia to amino acids
(d) Conversion of ammonia and nitrates to gaseous nitrogen in the soil
37. One of the useful activities of several bacteria is
(a) Nitrogen
fixation
(b) Nitrification
(c) Operation
of biogeochemical cycles
(d) All
of the above
38. Mycoplasma is a
(a) Eukaryotic and multicellular
(b) Prokaryotic and multicellular
(c) Prokaryotic and unicellular
(d) Eukaryotic and unicellular
39. Which of the following are not blue - green algae?
(a)
Nostoc (b) Anabaena
(c)
Lichen (d) Aulosiras
39. Red sea
phenomena due to
(a) Red algae
(b) Dinophyceae
(c) Diatoms
(d)Blue-green algae (Trichodesmium
erythrium)
40. Which of the following movement may be found in
blue- green algae?
(a)
Flagellar (b) Ciliary
(c)
Gliding (d) None of the above
41. Which
was first photosynthetic organism?
(a) Green algae (b) Red
algae
(c)
Cyanobacteria (d) Brown algae
42. What is the photosynthetic product in
blue-green algae?
(a) Normal
starch (b)Glycogen
(c) Cyanophycean
starch resembling glycogen
(d) None
of these
43. The
characteristic of blue green algae is
(a) DNA without histone
(b) Nuclear membrane absent
(c) 70 S ribosomes
(d) All of the above
44.Nitrogenase
enzyme is found in Nostoc in the cell of
(a)
Vegetative (b) Heterocyst
(c)
Both (a) and (b) (d) None of these
45. In which of the following there is no sexual reproduction
(a)
Ulothrix (b) Nostoc
(c)
Aspergillus (d) Volvox
46. Sexual
reproduction is absent in
(a)
Cyanobacteria (b)
Bacteria
(c)
Eukaryote (d)
All of the above
47. Prokaryotes are characterized by
(a) A
true nucleus with double layered nuclear membrane is absent
(b) Well
developed nucleus with double layered nuclear membrane present
(c) Presence of
cell wall made of chitins,mucopolysaccharides and absence of
cell organelles like
mitochondria and chloroplasts
(d) Autotrophic in nature and only DNA is present
48. The
name Cyanobacteria refers to
(a)
Bacteria (b) Blue-green algae
(c)
Yeast (d)
Fungi
49. Prokaryotes are identified by
(a) Absence
of mitochondria
(b) Absence
of nuclear membrane
(c) Absence
of chloroplast
(d) Absence of cell membrane
50.
Cyanobacteria originated about how many years ago
(a)
1 billion (b) 2 billion
(c)
3 billion (d) 4 billion
51. During
rainy seasons, the ground becomes slippery due to dense growth of
(a)
Lichens (b) Bacteria
(c)
Green algae (d)
Cyanobacteria
52.
Atmospheric nitrogen-fixation is carried on by
(a)
Funaria (b) Anabaena
(c)
Chlamydomonos
(d)
Fern gametophyte
53.
Cyanophyceae has got
(a) Definite
nucleus and plastid
(b) No
definite nucleus but plastid
(c) Neither
definite nucleus nor plastid
(d) Definite
nucleus but no plastid
54. Nutrition in protists is
(a)
Holophytic (b) Holozoic
(c)
Saprozoic (d) All of these
55. The thalloid body of a slime mould
(Myxomycetes) is known as
(a)
Fruiting body (b) Mycelium
(c)
Protonema (d) Plasmodium
56.In Whittaker's
five kingdom classification, unicellular
eukaryotes primarily
aquatic and having
various cell organelles
constitute
(a)
Monera (b) Protista
(c)
Animalia (d) Plantae
57.If
phytoplanktons are destroyed in the
sea, then
(a) No
effect will be seen
(b) Primary
consumers will grow luxuriently
(c) It
will affect the food chain
(d) Algae
will get more space to grow
58.Slime
moulds in the division Myxomycota (true slime moulds)
have
(a) Pseudoplasmodia
(b) Spores that develop into free living
amoeboid cells
(c) Spores that develop into flagellated gametes
(d) Feeding stages consisting of
solitary individual cells
59. The scientist who coined the term 'protista' to
include both plant and animal like unicellular organism was
(a)
Robert Koch (b) E.F. Haeckel
(c)
L. Pasteur (d) Joseph Lister
60.Transverse groove present in dinoflagellates is
(a)
Sulcus (b) Cingulum
(c)
Annulus (d) Both (b) and (c)
61. Protistan genome has
(a)Membrane bound nucleoproteins embedded
in
cytoplasm
(b) Free nucleic acid aggregates
(c) Gene containing nucleoproteins condensed together in loose mass
(d) Nucleoprotein in direct contact with cell substance
62. Which
protist reproduces both
by binary fission and conjugation?
(a) Amoeba (b) Parameciumum
(c)
Euglena (d) Monocystis
63.
Protists obtain food as
(a) Photosynthesisers, symbionts and
holotrophs
(b) Photosynthesisers
(c) Chemosynthesisers
(d) Holotrophs
64. Which
one is not a protozoan protist?
(a)
Plasmodium vivax
(b)
Parameciuum caudatum
(c)
Enterobius vermicularis
(d)
Trypanosoma gambiense
65.
Unicellularity is characteristic of
(a)
Cyanobacteria (b) Monera
(c)
Protista (d)
All of these
66. Euglena
is a
(a)
Ciliate (b) Sporozoan
(c)
Flagellate (d) Sarcodine
67.
Protozoans are able to live efficiently due to their
(a) Motility (b)Rapid reproduction
(c) Ability
to manufacture food
(d) Specialized
organelles
68. Total parasites belong to protozoan group
(a)
Sporozoa (b)
Ciliata
(c)
Sarcodina (d) Zooflagellata
69. Which is not true for Paramecium?
(a) Under
unfavorable conditions, form cysts
(b) Presence
of large number of cilia on whole body surface
(c) Contain
contractile vacuoles for osmoregulation
(d) Use
pseudopodia for capturing prey
70. Slipper animalcule is
(a)
Paramecium (b)
Trypanosoma
(c)
Entamoeba (d) Protozoa
71. In life cycle of Plasmodium, exflagellation is seen in
(a)
Microgametocytes
(b)
Trophozoites
(c)
Macrogametocytes
(d)
Merozoites
72. Which
of the following
unicellular organism has
a macronucleus for trophic
function and one
or more micronuclei for
reproduction?
(a)
Euglena (b) Amoeba
(c)
Paramecium (d) Trypanosoma
73. A taxon is
a) A
group of related families
b) A
group of related species
c) A
type of living oranisms
d) A taxonomic group of any ranking.
74. Given figure is of filamentous
blue
green
alga Nostoc. Identify the parts marked as A and B and select the correct
option
A B
a) Heterocyst
Mucilaginous sheath
b)
Vegetative cell Mucilaginous sheath
c)
Trichomes Cell wall
d)
Mucilaginous sheath Heterocyst
75. Distinction of prokaryot and eukaryota is mainly based on
a)
Nucleus only
b)
Cell organelles only
c) Chromosome only
d) All of the above
76.
Which of the following statement is correct?
a)
All bacteria are autotrophic
b) All
bacteria are heterotrophic
c)
Mosdy bacteria are heterotrophic but some
are autotrophic
d) All bacteria
are photosynthetic
77. Bacteria that are
responsible for fermentation of dairy milk are
a)
Acetobacter b) Rhizobium
c) Lactobacillus d) Hay Bacillus
78. The smallest bacteria are
approximately
a) 0.5 μ b) 0,05 μ
c)
0.005 μ d) 0.0005 μ
79. Bacteria which directly
converts atmospheric nitrogen
into nitrogen compounds are called
a)
Denitrifying bacteria
b) Putrefying
bacteria
c)
Nitrogen fixing bacteria
d)
Nitrifying bacteria
80. Poly β - hydroxy butyrate of
a)
Wall material
b) Genome
c)
Reserve food
d) Excretory
substance
81. Bacterial DNA is
a)
Single stranded, circular
b) Single
stranded, linear
c)
Double stranded, linear
d) Double
stranded, circular
82. One of the following is not a photo- heterotroph
a)
Rhodospirillum
b) Rhodopseudomonas
c)
Chromatium
d) Rhodomicrobium
83. The main basis of classification of Protozoa is
a)
Locomotary device
b) Number
of nuclei
c) Shape
of the organisms
d) Method
of reproduction
84. Diatoms do not decay as readily as most other algae
because
a) They are no-living
cells
b) Theyhave
water-proof cell walls
c) They have
siliceous cell wall
d)They have
mucilaginous cell walls
85. In India”Sleepig sickness” is due to the bite of
a) Sand fy b) Whit fly
c) Tse tse fly d) Fruit fly
86. The phenomenon f having different kinds of nuclei in
the same mycelium is called
A) Monokaryotc
b)
Heterokaryotic
c) Dikaryotic
d) Heterozygous
87. A facultative parasite is one which
a)Is normally
arastie but can, also become asarophyte
b) Always
requires dead organic matter
c) Alwas
requires a living host
d) Is normally
a saprophyte but can also become a parasite
88. In the light of recent classification of
Living organisms into three domains of
life (bacteria, archaea and eukarya), which One of the following statements is
true about archaea
(a) Archaea completely differ from both
prokaryotes and eukaryotes
(b) Archaea completely differ from
prokaryotes
(c) Archaea resemble eukarya in all
respects Archaea have some novel features that are absent in
other prokaryotes and eukaryotes
89. Bacterial ribosoms are present
(a) In cytoplasm
(b)
On endoplasmic reticulum
(c)
On nuclear membrane
(d)
On cell wall
90. Colorless, unicellular, cell wall bound,
spherical or rod-shaped micro-organism and lacking organized nucleus is called
(a)
Mycoplasma (b) Virus
(c)
Bacteria (d) Cyanobacteria
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