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NAT II Biological Science MCQs With Answers
Question # 1
Many fungi are the sources of drugs, which drug is used to lower the blood cholesterol level
Choose an answer
Griseofulvin
Cyclosporine
Lovastatin
Ergotin
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Question # 2
The characters of constant nature which are used to define a group are
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Synthetic
Systematic
Variations
Diagnostic
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Question # 3
Second largest family of glowering plants
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Leguminoceae
Labiaceae
Cucurbitaceae
Solanaceae
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Question # 4
The process in which energy migration takes place within a group of neighbouring pigments is called
Choose an answer
Reductive resonance
Deductive resonance
Inductive resonance
None
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Question # 5
In fungi asexual reproduction occurs by all these method except which one
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Spores
Conidia
Binary fission
Budding
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Question # 6
The disease in which leaves may appear twisted and finally die is
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Bronzing
Whiptail disease
Whiplash disease
None
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Question # 7
Pyruscommunis is the botanical name
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Apple
Almond
Apricot
Lokat
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Question # 8
When the leaves fails to produce normal amounts of chlorophyll, the disease is
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Apoptosis
Chlorosis
Chlorination
Necrosis
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Question # 9
In Zygomycota during sexual reproduction, zygota formed directly by the fusion of hyphae forms temporary, dormant, thick walled resistant structure called as
Choose an answer
Ascospores
Zygospores
Asci
Ascocarps
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Question # 10
Brassica compestris is the member of the family
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Cucurbitaceae
Crucifereae
Compositeae
Ranunculaceae
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Question # 11
"In this stage the lichens are just like crumpled leaves attached at one point" about which stage we are talking
Choose an answer
Crustose lichen stage
Foliage lichen stage
Moss stage
Herbaceous stage
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Question # 12
Family labiateae is also called
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Lamiaceae
Labiaceae
Lambitaceae
None
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Question # 13
Seeds of members of family pharmacies are
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Endospermic
Exalbuminous
Both a and b
None of these
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Question # 14
If an author cited two or more specimens as types, the remaining cited species are
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Lectotype
Syntype
Paratype
Neotype
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Question # 15
Males suffering from Jacobs's syndrome have sex chromosomes
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XXX
XO
XXY
XYY
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Question # 16
Which of the following can be used as evidence of evolutions?
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Comparative embryology
Comparative anatomy
Genetic Code
All of these
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Question # 17
Family curcifereae is characterized by the persence of ------------ corolla
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Cross like
Cushion like
Zigzag
None
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Question # 18
Saccharomyces cervisiae is the most commonly exploited yeast which feature highlights their economic improtance
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Asexual reproduction
Unicellular
They ferment carbohydrate to ethanol and carbon dioxide
Sexual reproduction
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Question # 19
Botanists were agreed that scientific names should be in
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English
Latin
Greek
Spanish
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Question # 20
Natural system of classification is based on characters
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Reproductive and anatomical
Morphological and anatomical
Morphological and reproductive
Vegetative and reproductive
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Question # 21
Ray florets have ------------ flowers
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Tubular
Ligulate
Round
None
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Question # 22
Plants of Euphorbiaceae contain the vitamin
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A
B
C
D
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Question # 23
Studying a single population's relationship to its environment will be
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Synecology
Autecology
Ecology
Etealogy
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Question # 24
Which one of these is a predatory fungus?
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Pleurotus ostreatus
Mildews
Armillaria
Yeast
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Question # 25
All fungi lack chlorophyll and on the basis of their mode of nutrition, they include all these groups except
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Absorptive heterotrphs
Saprotrophs
Decomposers
Autotrophs
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Question # 26
The botanical name of Ajwain is
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Ocimum sanctum
Ocimumbasilicum
Methe sylvestris
Coleus aromaticus
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Question # 27
When a single gene effects two or more traits the phenomenon is called
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Epistasis
Bombay phenotype
Gene linkage
Pleiotropic
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Question # 28
Bentham and Hooker divided plants in 202 orders
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Seeded
non-seeded
Floral
non-floral
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Question # 29
In ecosystem an eagle may eat blue birds may eat insects, like caterpillar which feeds on green leaves this is a example of
Choose an answer
Simple food chain
Food web
Succession
Community relay
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Question # 30
Locus is
Choose an answer
Segment of chromosome
Position of a gene on the chromosome
Genes present on one chromatid
Collection of genes at specific part of chromosome
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Question # 31
The collection of stomatal pores guard cells and subsidiary cells is called;
Choose an answer
Stomatal Apparatus
Guard cells complex
None
Both a & b
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Question # 32
An ecosystem is forged from bare rock, sand or clear glacial pool where there is no trace of previous life it refers to
Choose an answer
Secondary succession
Hydrosere
Xerosere
primary succession
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Question # 33
Certain hornlike projections are given out from the back of anthers
Choose an answer
Translator
Cuculli
Gynoestigium
Pollinium
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Question # 34
Bark of Quillajasaponariais used in perparing
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Fiber
Dye
Paper
Shampoos
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Question # 35
Historical remnants of structures that had important function in ancestors but are no longer essential presently are called
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Analogous organs
Vestigial organs
Fossils
None of these
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Question # 36
--------- is the process of ATP production in chloroplast is
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Photophosphorylation
Dark reaction
Calvin cycle
All
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Question # 37
Members of malvaceae are
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Tropical
Sub-tropical
Temperate
Cosmopolitan
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Question # 38
Family ------------ incluldes 100 genera and 850 species
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Compositeae
Crucifereae
Labiateae
Cucurbitaceae
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Question # 39
The specimen designated by the author as type specimen is
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Holotype
Isotype
Lectotype
Syntype
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Question # 40
The non-protein part covalently bonded to enzyme is
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APO-enzyme
Coenzymes
Co-factor
None
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Question # 41
What are the important features that fungi have which help them in their survival on land?
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Tolerate wide range of pH
Tolerate temperature
Tolerate high osmotic pressure
All of the above
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Question # 42
The operculum aids in both respiration and reproduction in gastropods
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True
False
None of Above
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Question # 43
A distinctive feature of members of the class Polychaeta is
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Parapodia.
Clitellum.
Annuli.
Absence of setae.
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Question # 44
Arenicola is an example of class
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Oligocheata
Polycheata
Hirudinea
None of above
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Question # 45
Nematodes live in both aquatic and terrestrial environments
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True
False
none of the above
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Question # 46
Scientific name of blood fluke is
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Schistosoma
Taenia solium
Echinocissus granulosus
Clonorchis sinensis
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Question # 47
Which of the following is true of the radula of most molluscs?
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It is used in reproduction
It is used in excretion
It is used in rasping food
It is used in gas exchange
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Question # 48
The scientific name of the common pork roundworm is
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Ascaris lumbricoides.
Enterobius vermicularis.
Trichinella spiralis.
Wuchereria bancrofti.
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Question # 49
In Schizogony ----------- divisions takes place in mature individual
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Mitotic
Meiotic
Multiple mitotic
First mitotic then meiotic
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Question # 50
The scientist who describe a system of classification that distinguished between kingdoms according to cellular organization and mode of nutrition was
Choose an answer
R. M. Kristensen
Carolus Linnaeus
Rebert II. Whittaker
None of above
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Question # 51
No free living larval forms occur in the annelid subclass(es)
Choose an answer
Hirudinea
IIirudinea and Oligochaeta
Polychaeta
Polychaeta and Oligochaeta
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Question # 52
A ------------- is a mucoid mass that extends to the stomach of gastropods. It contains trapped food particles and is rotated by cilia
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Protostyle
Umbo
Crystalline style
Gastric shield
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Question # 53
--------------- are the characters that have arisen since common ancestory with the group
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Homologous characters
Derived characters
Synapomorphies
Both B and C
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Question # 54
Tsetse files are ------------- host for Trypanosoma brucei, causing sleeping sickness to humans
Choose an answer
Intermediate
Primary host
Definitive host
Both A and C are correct
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Question # 55
The aschelminthis contain organs for gas exchange and circulation.
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True
False
none of the above
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Question # 56
Animals of phylum cnidaria are
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Diploblastic
Triploblastic
None of above
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Question # 57
All are the characteristics of phylum cnidaria except
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Presence of mesoglea
Contain mesenchyme
gastrovascular cavity
contain nematocysts
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Question # 58
Process during which aschelminths shed their cuticle is called
Choose an answer
moltin (g)
ecdysis
eutely.
both a and b are correct.
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Question # 59
The annelid class whose members are mostly marine is
Choose an answer
Hirudinea.
Oligochaeta.
Polychaeta.
Clitellata.
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Question # 60
Animals of phylum cnidaria can be found in
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Aquatic environment
Marine environment
Dry and harsh environment
Both A and B are correct
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Question # 61
Most triploblastic animals have an
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tissue system level of organization
colonial level of organization
organ system level of organization
both A and B are correct
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Question # 62
The ------------- is a site of amino acid metabolism in an earthworm and is analogous to the vertebrate liver.
Choose an answer
Typhlosole
Seminal vesicle
Nephridium
Chloragogen tissue
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Question # 63
All the following characteristics are present in Dephnia except
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Carapace covers thorax
One pair of compoynd eyes
Presence of parapodia
Eight pairs of thoracic appendages
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Question # 64
Annelids and Arthropods share all of the following characteristics except one. Select the exception.
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A ventral cord
A complete digestive tract
Metamerism
An exoskeleton
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Question # 65
Oligochaetes are
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Monoecious.
Dioecious.
Monoecious dioecious.
asexual.
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Question # 66
Presence of metameric segmentation
Choose an answer
Lumbricus
Daphnia
Arenicola
Both A and C are correct
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Question # 67
Primary host for Fasciola hepatica is
Choose an answer
Snail
Sheep
Cattle
Both A and B are correct
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Question # 68
Which one is a member of class zoomastigophorea?
Choose an answer
Trichonympha
Trypanosoma
Paramyxa
Giardia
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Question # 69
Most polychaetes are
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Monoecious.
Dioecious.
Protandric.
Asexual.
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Question # 70
A clitellum is present in the members of the class Polychaeta is
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Hirudinea.
Polychaeta.
Oligochaeta.
IIirudinea and Oligochaeta
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Question # 71
Scientific name of fish tape worm is
Choose an answer
Clonorchis sinensis
Schistosoma
Diphyllobothrium latum
Fasciola hepatica
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Question # 72
Which of the following is a distinct feature that occurs in all pseudocoelomate phyla?
Choose an answer
pseudocoelom
adhesive glands
cuticle
none of the above
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Question # 73
Polymorphism is characteristic of phylum
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phylum Nematoda
phylum Annelida
phylum Cnidaria
None of above
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Question # 74
All of the following mollusc characters would be found in a member of the class Bivalvia except one. Select the exception.
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Visceral mass
head-foot
mantle cavity
radula
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Question # 75
A distinctive feature of members of the subclass Hirudinea is
Choose an answer
Parapodia.
Tentacles.
Anterior and Posterior suckers.
Palps.
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Question # 76
Of the following, which is the most recently described pseudocoelomate animal phylum?
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Pariapulida
Acanthocephala
Loricifera
Nematomorpha
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Question # 77
Which of the following is true of the visceral mass of a mollusc?
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It contains the gills
It secretes the shell
It is used in locomotion
It contains gonads and digestive glands
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Question # 78
Intermediate host for fish tape worm is
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Pig
Copepod
Snail
Humans
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Question # 79
The mantle of most mollusks
Choose an answer
is modified for locomotion
is used in attracting prey
secretes the shell
supports the radula
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Question # 80
Which of the following phyla are not pseudocoelomate?
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Acanthocephala
Rotifera
Polychaeta
Nematoda
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Question # 81
All are the characteristics of phylum Apicomplexa except------------------
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Single type of nucleus
Have resistant spores
Apical complex for penetrating host cells
No cilia and flagella
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Question # 82
Which one is not a characteristic habitat of Archaea?
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Acidic environment
Fresh water
High salt
Ocean floor
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