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NAT II Biological Science MCQs With Answers
Question # 1
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 # 2
The system of classification that reflects the evolution
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Modern
Phylogenetic
Polygenic
Natural
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Question # 3
In Aerobic respiration, the waste product in plants is produced in the form of
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Uric acid
CO
2
Walter
Ammonia
Both b & c
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Question # 4
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 # 5
Vegetative parts of ----------- are easier to observe than reproductive parts
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Angiosperms
Gymnosperms
Bryphytes
Pteridophytes
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Question # 6
Which true about pattern baldness except
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It is x-linked disease
It is sex influenced trait
It is autosomal recessive trait in females
It is autosomal dominant trait in male
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Question # 7
Genera with common characteristics are grouped into a more inclusive group
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Species
Family
Genus
Sub-species
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Question # 8
Which statement is not true about the family Euphorbiaceae
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They are found in arctic regions
They are mainly herbs and shrubs
They are a source of timber
Their seed is endospermic
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Question # 9
In ---------- stems & roots of plants increase in diameter
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Primary growth
Secondary growth
Permanent growth
Apical growth
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Question # 10
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 # 11
In ------------- long flowering stalk develops
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Parthenocarpy
Elongation
Vernalizaion
Bolting
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Question # 12
It is a duplicate specimen of holotype collected as same place and time
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Holotype
Isotype
Lectotype
Syntype
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Question # 13
Seed of rosaceae is
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Edosperm
Endosperm oily
Non endosperm
None
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Question # 14
Fruits of labiateae is
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Pome
Pappus
Drupe
Carcerulus
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Question # 15
The species with the same specific epithet cannot occur in the genus. If this happens, they are called
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Homonym
Synonym
Legitimate
Illegitimate
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Question # 16
Mycorrhiza is an association between roots of plants growing in acid soil and certain fungi to which relation it belongs
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Symbiosis
Commensalism
Grazing
Grazers
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Question # 17
The phenomenon of interference / hide the effect of one gene present at one locus by the other gene present at other locus is called
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Epistasis
Crossing over
Gene linkage
Synapsis
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Question # 18
Fungi are classified in a number of groups which is one of the following groups that does not show sexual reproduction
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Zygomycota
Ascomycota
Basidiomycota
Deuteromycota
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Question # 19
An ordered array composed of a series of inclusive levels
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Taxon
Systematics
Hierarchy
Monopoly
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Question # 20
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 # 21
When all the original specimens and their duplicates have been lost or destroyed
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Lecto type
Neotype
Isotype
Paratype
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Question # 22
Fruits of Emblicaofficinalis are used for making
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Oil
Perfume
Hair dye
All of these
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Question # 23
Cryptostegiagrandiflorais a cultivated ----------- growing in gardens.
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Herb
Shrub
Grass
Climber
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Question # 24
Second largest family of glowering plants
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Leguminoceae
Labiaceae
Cucurbitaceae
Solanaceae
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Question # 25
The transference of pollen grains on the stigmatic surface is brought by a special structure
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Polonium
Gynoestigium
Corpusculum
Translator
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Question # 26
Fruit of Ranunculaceae is
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Etaerio of achenes
Capsule
Etaerio of follicles
All of these
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Question # 27
Major types of ecosystems, those that occupy board geographical regions are called
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Climax community
Biome
Planetary ecosystem
Community
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Question # 28
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 # 29
The criteria of the classification are the ----------- on which the classification is based.
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Groups
Divisions
Characters
Orders
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Question # 30
Following statement is in accordance to Darwinisw
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Natural Selection
Over Production
Survival of fittest
All of these
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Question # 31
Botanists were agreed that scientific names should be in
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English
Latin
Greek
Spanish
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Question # 32
The group of enzymes that bring about non-hydrolytic addition or removal of substrate are
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Hydrolase
Protease
Heptase
Dehydrogenase
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Question # 33
Gene pool is the total aggregate of gene a ----------- at any one time.
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Individual
Population
DNA
Chromosome
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Question # 34
Study of relationship of animals to their environment is termed as
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Ecology
Eco
System
Biotic components
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Question # 35
Protanopia is
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Green blindness
Red blindness
Yellow blindness
Blue blindness
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Question # 36
As a result of the union of anther and pistil this structure is formed
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Polonium
Gynoestigium
Corpusculum
Translator
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Question # 37
The species which is at the threat of danger of extinction is called
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Endangered species
Extinct species
Threatened species
All of these
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Question # 38
While studying the components of an ecosystem what is the biotic component in all these examples?
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Gravity
Topography
Consumers
Temperature
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Question # 39
Wilhelm Eichler divided plants into two groups
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Bryophytes and pteriidophytes
Gymnosperms and angiosperms
Thalophytes and carmophytes
Cryptogamy and Phanerogamy
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Question # 40
He distinguished gymnosperms as naked seeded are enclosed in vessels
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Rebert Brown
Linneous
Armen Takhtajan
Arthur
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Question # 41
If two substances move in different directions, through the membrane, the contransport is called;
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Antiplast
Heteroplast
Apoplast
None
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Question # 42
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 # 43
A succulent berry with hard rind is commonly known as
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Drupe
Pome
Pepo
None
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Question # 44
Translocation into developing organs, i.e. Roots, tubers and reproductive organs is called;
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Deport
Export
Both a & b
None
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