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NAT II Biological Science MCQs With Answers
Question # 1
Locus is
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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 # 2
Seeds of family ---------- bear a tuft of hairs
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Compositeae
Labiateae
Asclepiadaceae
Ranunculaceae
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Question # 3
Parasexuality is a special type of genetic recombination which is showed by which group of fungi
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Penicillium
Imperfect fungi
Powdery mildews
Spitting fungus
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Question # 4
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 # 5
Stephen Endlicher classified plants into two major groups
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Thalophytes and pteridophytes
Thalophytes and carmophytes
Bryophytes and pteridophytes
Angiosperms and ghmnosperms
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Question # 6
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 # 7
The present international code of botanical nomenclature consists of ---------- rules.
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Phylogenetic system
Nomenclature type
Specific name
Common names
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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
The genus name and the specific epithet together
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Scientific name
Nomenclature
Binomial
Specific name
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Question # 10
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 # 11
The non-protein part covalently bonded to enzyme is
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APO-enzyme
Coenzymes
Co-factor
None
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Question # 12
Fungi cause certain animal diseases. How Ringworm and athlete's foot are caused by fungi
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Imperfect fungi
Aspergillus fumigatus
Purple ergot
Soil contaminated with bird's feces
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Question # 13
Cytochrome 'c' found is all aerobic species is a respiratory
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Carbohydrate
Protein
Co-enzyme
Vitamin
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Question # 14
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 # 15
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 # 16
The specimen designated by the author as type specimen is
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Holotype
Isotype
Lectotype
Syntype
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Question # 17
Apple is a member of family
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Rasaceae
Ranunculaceae
Labiaceae
Malvaceae
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Question # 18
Certain hornlike projections are given out from the back of anthers
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Translator
Cuculli
Gynoestigium
Pollinium
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Question # 19
Euphorbia Milli is a
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Tree
Herb
Ornamental shrub
Ornamental herb
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Question # 20
Raphanussativusis the botanical name of
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Radish
Cabbage
Wall fruit
Wall cress
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Question # 21
Fungi are used in food industry, which fungi is used in bakery for flavor, aroma, color to some cheese
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Yeast
Penicillium
Aspergillus
Neurospora
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Question # 22
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 # 23
The appendages of anthers form a corona
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Tanslator
Cuculli
Staminal
Pollinium
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Question # 24
When there is a net movement of water molecules occurs towards an imbibant, the type of diffusion is
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Potential diffusion
Active diffusion
Passive diffusion
Imbibation
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Question # 25
He is regarded as the father of modern taxonomy
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Robert Thorne
Armen Takhtajan
Linneous
Arthur Conquist
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Question # 26
-----------harmone increase tendency of plants to produce a male flower
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Auxins
Gibberllins
Ethylene
Abcissic acid
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Question # 27
Rusts belong to the group of club fungi they are called so because
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Orange-yellow colored disease spots on their host surface
Dusty spore masses that resemble soot
Rust have fruiting bodies
Puccinia species
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Question # 28
A sex limited trait is limited to only one sex due to
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Taxonomic differences
Ecological differences
Physiological
Anatomical difference
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Question # 29
Disease in living organisms, which are caused by parasites called as
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Predation
Symbiosis
Infestations
Mutualism
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Question # 30
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 # 31
Members of family -------- are a source of camphor
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Cucurbitaceae
Labiaceae
Compositeae
Malvaceae
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Question # 32
--------- lives for more than two growing seasons
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Binnials
Annuals
Perenials
Bicarpic
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Question # 33
In fishes, gill pouches develop into
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Gills
Threat & Middle ear
Eustachian tubes
Both A and B
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Question # 34
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 # 35
The other name of glycolysis is
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Calvin cycle
EMP pathway
Light reaction
None
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Question # 36
Cohesion theory of ascent of sap is proposed by
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Zimmernmann
John jolly
Dixon
Both a & b
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Question # 37
Potentillaanserina is useful in
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Asthma
Dissolving kidney stones
Skin diseases
Stomach disorders
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Question # 38
In plants the process of respiration is also termed as;
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Tissue respiration
Eqidermal respiration
Both a & b
Cutaneous Respiration
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Question # 39
Studying a single population's relationship to its environment will be
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Synecology
Autecology
Ecology
Etealogy
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Question # 40
Which statement is not true about the family Euphorbiaceae?
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Self and cross
Insect and cross
Self and insect
Self and wind
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Question # 41
Many fungi are the sources of drugs, which drug is used to lower the blood cholesterol level
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Griseofulvin
Cyclosporine
Lovastatin
Ergotin
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Question # 42
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 # 43
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 # 44
Study of relationship of animals to their environment is termed as
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Ecology
Eco
System
Biotic components
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